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Australian Education - ubd high school geometry congruence
6 Tagged Resources - "ubd high school geometry congruence"
maths homework helper algebra help math software from teachers choice software - math homework help from basic math to algebra, geometry and beyond. Students, teachers, parents, and everyone can find so... | 677.169 | 1 |
that it is equivalent to finding two mean proportionals between a line segment and another with twice the length. In modern notation, this means that given segments of lengths a and 2a, the duplication of the cube is equivalent to finding segments of lengths r and s so that
A point in the Euclidean plane is a construct... | 677.169 | 1 |
Newsflash!
The Mathematics behind the Math Midway
October 30th, Lawrence Hall of Science
Monthly Problem
Four Leaf Clover
Around the outside of a 4 by 4 square, construct four semicircles (as shown in the figure) with the four sides of the square as
their diameters. Another square, ABCD, has its sides parallel
to the c... | 677.169 | 1 |
Now, we know that this is the ratio between the two so we don't know, you know this could be 10 and this could be 26. This could be 1 and this could be 13/5, who knows, but it actually doesn't matter because that's what's needed by trigonometry. It's all about the ratios. So, let's just assume that this is 5, that the ... | 677.169 | 1 |
Ancient builders and surveyors needed to be able to construct right angles in the field on demand. The method employed by the Egyptians earned them the name "rope pullers" in Greece, apparently because they employed a rope for laying out their construction guidelines. One way that they could have employed a rope to con... | 677.169 | 1 |
Unit Q Concept 5 - Trigonometric Identities
This playlist is under construction. You can improve it by adding relevant articles and sharing it. Click the big pencil icon to edit the playlist.
Unit Q Concept 5 - Trigonometric Identities
using various simplification methods to verify and simplify trigonometric expression... | 677.169 | 1 |
Dual polyhedron
In geometry, polyhedra are associated into pairs called duals, where the vertices of one correspond to the faces of the others solids and Kepler-Poinsot polyhedra — are arranged into dual pairs.
Duality is defined in terms of polar reciprocation about a given sphere. Here, each vertex is associated with... | 677.169 | 1 |
Welcome to Geometry. If you need to email just click Email to the left. If you would like to get updates when I update this page, just click on Subscribe for updates to the left.
Geometry
Geometry focuses upon relations, properties, and measurement of surfaces, lines, and angles in one, two, and three dimensional figur... | 677.169 | 1 |
english this is for the book to kill a mockingbird what is significant about Mr. Cunningham kneeling down and saying to Scout "i'll tell him you said hey, little lady"
math given the points A(0,0), B(3,1) and C (1,4) what is the measure of angle ABC I plotted it on a gragh and got 1.46 degress. I am unsure if I am doin... | 677.169 | 1 |
Point
posted on: 13 Apr, 2012 | updated on: 20 Dec, 2012
The word Point is defined as the place, position or location in the space. There is no width, length and height of a point, it is also dimensionless. There is no dimension for the indication of point. Dimensionless means they do not have any volume, area, length.... | 677.169 | 1 |
Geometry: Special Triangles
On this page we hope to clear up problems that you might have
with special triangles, such as a 30°-60°-90°, and
theorems that apply to them, such as the Pythagorean Theorem. Read
on or follow any of the links below to start better understanding special
triangles.
Pythagorean Theorem
One of ... | 677.169 | 1 |
Anyway, here's how the theorem works. To keep the numbers simple, let's say a = 3 yards and b = 4 yards. Then to figure out the unknown length c, we don our black hoods and intone that c2 is the sum of 32 plus 42, which is 9 plus 16. (Keep in mind that all of these quantities are now measured in square yards, since we ... | 677.169 | 1 |
Octagon calculator
In geometry, an octagon (from the Greek okto, eight) is a polygon that has eight sides. A regular octagon is a closed figure with sides of the same length and internal angles of the same size. It has eight lines of reflective symmetry and rotational symmetry of order 8. The internal angle at each ver... | 677.169 | 1 |
directrixrix is discussed in the following articles:
cones
...the surface traced by a moving straight line (the generatrix) that always passes through a fixed point (the vertex). The path, to be definite, is directed by some closed plane curve (the
directrix), along which the line always glides. In a right circular con... | 677.169 | 1 |
I am homeschooling my son and these problems are giving him a difficult time,
I don't know much about math, history is my skill, so if you could help me, I
would most appreciate it.
Directions- complete and draw
1. Given a segment AB, construct and label the locus of points at a distance
AB from point A and equidistant... | 677.169 | 1 |
They have regular polygonal bases and square sides: from left to right, the bases are triangular, squared, pentagonal, and heptagonal. This series of solids can grow up to infinite sides, and this is the reason these polyhedra have been excluded from the Jonson solids list. Note that the squared base prism simply is...... | 677.169 | 1 |
As a conclusion of this article I'd like to collect some information about Platonic Solids.
- Tetrahedron: also an triangular pyramid
- Hexaedron (Cube): also a square prism
- Octahedron: also a square bypyramid, or a triangular antiprism
- Icosahedron: also the sum of a pentagonal bipyramid and a pentagonal antiprism
... | 677.169 | 1 |
13.2012
ode to equilateral
Yeeaaahh....
I found my favorite triangle.
What?
You don't have a favorite triangle?
Let me introduce you to my friend the Equilateral triangle.
Seriously, you've made things with the others.
Probably Isosceles. Maybe Scalene for you modern improv folks.
You've maybe had some trouble with the... | 677.169 | 1 |
You can put this solution on YOUR website! The sum of the exterior angles in any convex polygon is 360, so you can divide 360 by the number of vertices (sides) to obtain the degree measure of each exterior angle (e.g. for a pentagon, exterior angle = 360/5 = 72). To find the interior angle, simply subtract this angle m... | 677.169 | 1 |
plug in the values for x and y to find the perimeter (sum of the sides)
Vectors/286948: Let vector v=<5,-1,4>. Give a vector w in the opposite direction of v and with magnitude twelve. Give its components to the nearest tenth. I don't understand how to solve the problem and I can't seem to find any similar examples in ... | 677.169 | 1 |
from KET illustrates how an origin is used for positive and negative measurement along a straight line and on a flat plane. It also shows how an origin, latitude, and longitude identify locations on Earth and explores how measuring temperature differs from measuring height or weight.
Origin is a mathematical construct ... | 677.169 | 1 |
Volume/47620: The Volume of a cube is given by V=s^3, where s is the length of a side. Find the length of a side of acube if the volume is 1000 cm^3 1 solutions Answer 31459 by Nate(3500) on 2006-07-29 22:03:22 (Show Source):
Graphs/47630: Graph the functions y = x and y =2 squared x on the same graph (by plotting poin... | 677.169 | 1 |
In the same way, we can use the Formulas (and our newly-christened right angle values) to explore the Second Quadrant: we simply throw our First Quadrant angles over the wall. For example,
This result makes some sense: The "vertical shadow" of a unit segment rotated to angle $\theta + 90^{\circ}$ matches the "horizonta... | 677.169 | 1 |
In addition
to finding lines (axes) of symmetry, you can also look for points of symmetry.
A
point of symmetry is a point that represents a "center" of sorts for the figure.
For any line that you draw through the point of symmetry, if this line crosses the figure
on one side of the point, the line will also cross the f... | 677.169 | 1 |
Copy&paste 31.5n63.3w-32.7n62.9w, 32.7n62.9w-33.9n62.2w, 33.9n62.2w-35.5n60.6w, 35.5n60.6w-37.1n58.5w, noc, 35.5n60.6w-53.863n9.907w into the GreatCircleMapper for more info
Question: Which coordinate pair has the largest longitude value? Answer: 31.5n63.3w | 677.169 | 1 |
is designed for calculus students. Problem: you are given 100 feet of fence and
you are to enclose a figure that looks like a basketball key: consisting of a
rectangle with a semicircle attached to the top of the rectangle. Find the
dimensions of this shape that uses 100 feet of fence to enclose it and also has
the max... | 677.169 | 1 |
Right Triangle Trigonometry: Real Life (non-linear) PowerPoint there are 6 examples of how to use right triangle trig to solve real life problems. These word problems include things like measuring sycamore trees, escalators in a mall, water slides, ski slopes, sightseeing in NYC, and creating a wheelchair ramp. These p... | 677.169 | 1 |
college cornerstone what time and financial constraints have you face since starting college? How did you deal with them
math The measure of the supplement of an angle is 20 degrees more than three times the measure of the original angle. Find the measures of the angles.
trig Two men on the same side of a tall building... | 677.169 | 1 |
Figures of Constant Width
At first thought, the circle would seem to be
the only two-dimensional figure of constant width. And as such, it can be used
as a wheel, without your vehicle bobbing up and down. But, it turns out that
there are infinitely many figures of constant width (depending on how you
define width). On ... | 677.169 | 1 |
Descriptive geometry used to be taught to engineers, not so often now that we have computer drawing software. The idea is to project 3D objects onto TWO half-planes, then flatten the half planes into a sheet of paper. There is a redundant dimension in the representation.
This can be exploited to visualize 4 dimensions:... | 677.169 | 1 |
We know a polygon is a simple closed figure made up of only line segments. We can classify polygons according to the number of sides or vertices.
The simple polygon we know is a triangle. A triangle has three sides and, thus, is a three-sided polygon.
A four-sided polygon is called a quadrilateral.
A five sided polygon... | 677.169 | 1 |
Some shapes are pleasing because they are so symmetrical and other shapes are pleasing because they are so complicated.
Shapes are the concern of the area of mathematics called geometry. However, here we will adopt a broader view of geometry, which can be thought of as the science of studying visual patterns. Shapes ar... | 677.169 | 1 |
Figure 11 is a rhombus, trapezoid, parallelogram, rectangle, kite, and square. In this situation we can use the definitions of the words to determine that Figure 11 is an example of all of these types of quadrilaterals. However, there are quadrilaterals which are, for example, rhombuses but not squares.
Furthermore, th... | 677.169 | 1 |
So take r3=0 and you have solved the problem. Additionally, Dots can be named circles with r=0 so C3 is still a perfectly fine circle. The other intersection is at (0.5;-sqrt(3/4)) so C3 should have r3=2sqrt(3/4) to join in that intersection but then r3 is no integer)
Taking n>1, we'll get the y-coordinate of the inter... | 677.169 | 1 |
Center of a graph: The center of a graph G consists of the subgraph of G induced by the set of vertices of G with minimal eccentricity. (The eccentricity of a vertex v is the distance v has from the vertices that are farthest (graph distance) from it.
Median of a graph: The median of a graph G consists of the subgraph ... | 677.169 | 1 |
I think that the accuracy of our design turned out to be low, unfortunately. This is because the tape that we used to mark the angles, kept moving around due to the wet pavement. Sometimes, people accidentally stepped on the tape markers and we had to relocate where the marker should be (if we didn't, further angles an... | 677.169 | 1 |
1. CONSTRUCT A COMPLETE UNIT CIRCLE: this shall include all "30,45,60" degree angles in each quadrant, as well as the axis angles. In addition to drawing each angle, you must label all angles with both their degree and radian measure. Additionally, you must also write the coordinates for each corresponding point along ... | 677.169 | 1 |
Need help with Math assignment?
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Two lines are said to be parallel, if they are in the same distance away at each point.
That is, two lines are said to be parallel if
They both lie in the same plane and
They do not intersect (or cross each other)
The above definition really means that p... | 677.169 | 1 |
Question 379437 Click here to see answer by robertb(4012)
Question 379 Click here to see answer by mananth(12270)
Question 379922: a piece of wire 10m long is cut into two pieces. one piece is bent into a square and the other is bent into an equilateral triangle. how should the wire be cut so that the total area enclos... | 677.169 | 1 |
direction I am pointing, represented by three angles - one for each angle of rotation (rotation in X, rotation in Y, rotation in Z) (for the sake of the example let's assume I'm one of those old logo turtles with a pen) and the distance I will travel in the direction I am pointing.
What does 'rotation in x, rotation in... | 677.169 | 1 |
Circle
called, centre, qv, diameter, ratio, circles, plane and geometry
CIRCLE (from Lat. cireulus, dim. of circus, Gk. dpKos, rk og. Kpkos, kriko.c, circle). The locus (q.v.) of all points in it plane at an equal finite distance from a fixed point in that plane. The fixed point is called the centre, and the spate inel... | 677.169 | 1 |
Cut The Knot!
Inversion
'I suppose I must have gone round in a circle.'
The sergeant again exchanged a knowing glance with the whole personnel of the station. 'A fine circle, that circle of yours!'
Jaroslav Hasek The Good Soldier Svejk, Penguin Books, 1983, p. 255
Let's consider the following problem that, perhaps surp... | 677.169 | 1 |
Polar Representation of Complex Numbers
The Argand diagram
In two dimensional Cartesian coordinates (x,y), we are used to plotting the function
y(x) with y on the vertical axis and x on the horizontal axis.
In an Argand diagram, the complex number z = x + iy is plotted as a single point with coordinates (x,y). The hori... | 677.169 | 1 |
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Symmetry
Symmetry is when the beatmap is symmetrical in respect to an axis. The most common type of symmetry is horizontal symmetry. There are other types of symmetry too, however, like vertical symmetry, diagonal symmetry, and symmetry with respect to the origin ... | 677.169 | 1 |
Distance formula Teacher Resources
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Middle and high schoolers solve 14 problems that include finding the distance between two points in different situations. First, they refer to a number line to find the measure of each point on the line. Then, pupils refer to the coordinate plane... | 677.169 | 1 |
How would one best describe an ellipse?
Question
#62330. Asked by minuscule_. (Feb 06 06 8:32 PM)
smeogalla
a regular oval resulting when a cone is cut obliquely by a plane. from the greek elleipsis- deficit
Feb 06 06, 11:03 PM
romeomikegolf
a closed plane curve resulting from the intersection of a circular cone and a ... | 677.169 | 1 |
You can put this solution on YOUR website! it is difficult to know what your asking here!!! SAS -side,angle,side- is a theorem which states that if any two sides and the included angle of one triangle are congruent to the corresponding parts of another triangle the triangles are congrent. You will have to be more speci... | 677.169 | 1 |
Laying out an Ellipse
Kevin Boyle explains how to properly lay out an ellipse
Share
Mon, 25 Jun 2012|
Transcript
Laying out circles in the shop is an easy task when you've got your compass, a centerpoint—strike a circle no problem. But laying out an ellipsis is a little trickier. Today we're going to show you a way of ... | 677.169 | 1 |
word "secant" comes from the Latin word meaning "cutting."
Similarly, the cosecant of the angle AOB is the line OG from the center of the circle
to the cotangent line FG.
Exercises
Note: as usual, in all exercises on right triangles c stands for the hypotenuse,
a and b for the perpendicular sides, and A and B for the a... | 677.169 | 1 |
In this example, each of the roads leading up to the intersection is one block
long. We found earlier that the angles opposite each other in the intersection
have equal measure due to the Vertical Angle Theorem. Since the
sides have equal length and the included angles are the same, the two triangles
formed, Triangle A... | 677.169 | 1 |
Yes, the Pythagorean Theorem is involved in proving this stuff. Yes, these are the same letters
used in the Pythagorean Theorem. No, this is not the same as the Pythagorean Theorem. Yes,
this is very confusing. Accept it, make sure to memorize the relationship before the next test,
and move on.)
For a taller-than-wide ... | 677.169 | 1 |
questions and answers, some old some new.
OK, so the original question was about 15 years ago, a WISEA$$ kid sitting in a geometry class (me) says, "this sucks, what are we ever going to use this for?!" Not sure what the answer was then, but can think of something now! This leads to the second question where I ask you ... | 677.169 | 1 |
No, it is somewhat old and there is nothing online that I can find. – AdamJun 8 '11 at 0:01
If you are doing homework, just use calculator.com or any online calculator. If you need to figure ut how to use the calculator for a test or some other type of assessment, ask your teacher. – JavaManJun 8 '11 at 0:14
It is for ... | 677.169 | 1 |
Lesson Plans & Activities
Line Segments and Angles
This lesson explains lines, points, line segments, rays, and angles. It also details right, acute, and obtuse angles. There are also different student activities for practice including a matching game.
Comments & Collaboration (1)
Select your preferred way to display t... | 677.169 | 1 |
Conic Sections
Conics or conic sections are the curves corresponding to various plane sections of a right circular cone by cutting that cone in different ways.
Each point lying on these curves satisfies a special condition, which actually leads us towards the mathematical definition of conic sections.
If a point moves ... | 677.169 | 1 |
One can arrive at the Pythagorean theorem by studying how changes in a side produce a change in the hypotenuse and employing
The triangle ABC is a right triangle, as shown in the upper part of the diagram, with BC the hypotenuse. At the same time the triangle lengths are measured as shown, with the hypotenuse of length... | 677.169 | 1 |
Question 745773: Hello, I have this problem where in a parallelogram, one obtuse angle = 225-2x. The x variable represents an acute angle. As you know all the angles of a quadrilateral added up equals 360 degrees. And the angles opposite eachother are equal. I have tried inputting some angles for x such as 45, 35, and ... | 677.169 | 1 |
Well it's obvious that this figure IS NOT drawn to the scale, as x=90 degrees and at the figure it's not so.
I asked the similar question to the GMAT tutor Ian Stewart and he kindly gave me explanation. So, below is how GMAT draws the diagrams:
"In general, you should not trust the scale of GMAT diagrams, either in Pro... | 677.169 | 1 |
Problem 113.
Area of Triangles, Incircle, Excircles.
Level: High School, SAT Prep, College
In the figure below, given a triangle
ABC, construct the incircle with incenter I and excircles with
excenters E1, E2, and E3. Let be D, E, F, G, H,
and M the tangent
points of triangle ABC with its excircles. If S1, S'1, S2, S'2... | 677.169 | 1 |
You could also say it's a 90+360 = 450 degree angle, or any number $90+360n$ where n is a natural number. The point is, we say that it's 90 degrees clockwise or 270 mostly by convention, but yes, "an angle consists of infinitely many angles" is true.
Similarly for 2) you called it an "equiangular" triangle and so indee... | 677.169 | 1 |
Greatest digit is 9, but less than 900, so at most the number can have three digits, and the hundreds digit cannot be 9. One more than a multiple of 10. All multiples of 10 end in 0, so one more must end in 1. That means that the 1s digit is 1, and since 1 plus 9 is only 10, we need another digit, namely a 2 to make th... | 677.169 | 1 |
Problem 93. Similar Triangles, Circumcircles, Parallelogram.
High School, College
In the figure below, given a triangle
ABC, line DEF parallel to AC and line FGM parallel to AB. If O,
O1, O2, and O3, are the
circumcenters of triangles ABC, DBE, FGE, and MGC respectively,
prove that the quadrilateral OO1O2O3
is a parall... | 677.169 | 1 |
Given: Triangle ABC is isosceles; Line segment CD is the altitude to the base AB
Could you help me solve this 2-column proof by using statements and reasons please?
Question 211409: Given: angle 1 and angle 2 are supplementary, and angle 3 and angle 4 are supplementary, angle 2 and angle 3 are congruent.
Prove: angle 1... | 677.169 | 1 |
b and another (XA) perpendicular to b.
This process of dividing a
into two parts is known as projectingaonto components parallel and perpendicular tob.
Recall that |a| is the length of OA. The length of OX is therefore . But recall that ,
so that ,
as stated.
Problems
5.9 Let a and b be two vectors. Project a
onto comp... | 677.169 | 1 |
Straightedges (guides; curve rulers or templets B43L 13/20; straightedges characterised by the provision of indicia or the like for measuring, e.g. rulers or tapes with measuring scales or marks for direc reading, G01B)
NOTE
-
In this group, the following term is used with the meaning indicated: "straightedge" means an... | 677.169 | 1 |
Question 554048: This is from the geometry regents August 2011, number 38.
Given: Triangle ABC with vertices A(-6,-2), B(2,8), and C(6,-2)
Line AB has midpoint D, Line BC has midpoint E, and Line AC has midpoint F.
Prove: ADEF is a parallelogram.
ADEF is not a rhombus. Click here to see answer by KMST(1936)
Question 55... | 677.169 | 1 |
uses deductive reasoning to justify the relationships between the sides of 30°-60°-90° and 45°-45°-90° triangles using the ratios of sides of similar triangles (2.4.A1a).
3.1.A3
understands the concepts of and develops a formal or informal proof through understanding of the difference between a statement verified by pr... | 677.169 | 1 |
The students will develop basic skills making and identifying homogeneous tessellations, both regular and semiregular.
Materials needed:
One overhead projector, One transparency of tessellation patterns with vertices marked and polygon name listed below, One set of overhead transparency pens, Two - four small plastic b... | 677.169 | 1 |
Vertex
A vertex (Latin: whirl, whirlpool; plural vertices), in geometry, is a corner of a polygon (where two sides meet) or of a polyhedron (where three or more faces and an equal number of edges meet).
In 3D computer graphics, a vertex is a point in 3D space with a particular location, usually given in terms of its x,... | 677.169 | 1 |
... fain would I turn back the clock and devote to French or some other language the hours I spent upon algebra, geometry, and trigonometry, of which not one principle remains with me. Stay! There is one theorem painfully drummed into my head which seems to have inhabited some corner of my brain since that early time: ... | 677.169 | 1 |
Try this: start with the vector v0 = (1, 0), and interpret it as the xy-coordinates of a point in the plane. That is, (1, 0) is the point 1 unit to the right of the origin, and 0 units up, so it is on the x-axis. Draw a picture: make a vertical line for the y-axis and a horizontal line for the x-axis, like a big plus s... | 677.169 | 1 |
That's basically all of trig, those six functions and their interactions. (You're going to have to memorise those definitions, unfortunately. It helps to notice that adding 'co' to the front simply changes X's to Y's and Y's to X's) And there's a lot of interactions, because X, Y and R are all related to each other by ... | 677.169 | 1 |
1. When lines, segments, or raysintersect, they form angles. If the angles formed by two intersecting lines areequal to 90 degrees, the lines are _____________________ lines.
2. Some lines in the same plane do notintersect at all. These lines are _______________ lines.
3. _____________ lines do notintersect, and yet th... | 677.169 | 1 |
Angles can also be measured in radians. At high school level you will only use degrees, but if you decide to take maths at university you will learn about radians.
Figure 2: Angle labelled as B^B^, ∠CBA∠CBA
or ∠ABC∠ABC
Figure 3: Examples of angles. A^=E^A^=E^, even though the lines making up the angles are of different... | 677.169 | 1 |
Angles/457940: two angles are supplementary. one is 87 degrees more than twice the other. Find the measures of the angles. 1 solutions Answer 314115 by rfer(12657) on 2011-06-06 00:10:41 (Show Source):
You can put this solution on YOUR website! you missed the -5
and didn't move the three correctly.
Your having a little... | 677.169 | 1 |
So all this is just so that depth can be taken into account? Speaking of which your diagram can either be considered wrong or your suggestion lacking details. There is no measurement of the distance away from the monitor. Especially when for people like me, having the hydra base close to the monitor causes jitter. Whic... | 677.169 | 1 |
Hey there. I am not sure if my other comment, but here's what I wanted to say. My example in Math 1060 for angles was the "we use angles to measure the distance from the where I am standing on the horizon to where the moon is in the sky." Well in my astronomy book, all I could find was angular distance which they use t... | 677.169 | 1 |
timeline should contain all the required information listed in Section A of the project.
Section A: Timeline
Please note that some the times given are approximations, historians provide slightly different dates for the earlier developments in trig. There is also disagreement about which trig table should be counted as ... | 677.169 | 1 |
Trisecting the Area of a Triangle
by
James W. Wilson
Introduction.
The task is to divide a given triangle into three regions of equal
area, using line segments and points. There are several different
problems that can be posed.
Here are four:
Problem 1. If a triangle ABC is given and a random
point P on the triangle is... | 677.169 | 1 |
Triangle BAD is congruent to Triangle CAD (statement) Given (reason)
AD is perpendicular to BC (statement) Given (reason)
BA is congruent to AC (statement) Corresponding parts of congruent triangles (reason)
You can put this solution on YOUR website!
If we assume that the labeling in the problem ("Given triangle BAD is... | 677.169 | 1 |
The
horizontal lines of latitude are called parallels
because they run parallel to the equator. Imagine them as
horizontal "hula hoops" around the earth.
The
latitude line numbers measure how far north or south of the
equator a place is. The equator has the number 0 degrees latitude.
The numbers get larger the further ... | 677.169 | 1 |
Ellipse
In the following figure the plane
is slicing the cone at an angle,β,
greater than 900.
As β increases the plane will eventually become
parallel with the edge of the cone. At this point the section will be a
parabola; up to this point we have an ellipse.
The
intersection will look like the following:
An
ellipse ... | 677.169 | 1 |
I have two intersecting quadrilaterals (the area of intersection is the grey polygon with thick boundary):
These properties holds:
One quadrilateral is always a rectangle
There is always some intersection
Both quadrilaterals are convex (hence the intersection is a convex polygon as well)
The goal is to measure area of ... | 677.169 | 1 |
Social Web Research
This page contains a list of user images about Phase Angle which are relevant to the point and besides images, you can also use the tabs in the bottom to browse Phase Angle news, videos, wiki information, tweets, documents and weblinks.
In the context of vectors and phasors, the term phase angle ref... | 677.169 | 1 |
Once you start thinking about ways to give students more power/responsibility, you see them everywhere. What have you done to change the balance of power in your classroom – either towards the students or towards the teacher?My blog has gotten a little lofty lately, and it's been a while since I just posted some plain ... | 677.169 | 1 |
We'll each eat through the Radius,
To the center where we get a Lady and Tramp kiss.
The distance from one side, through the middle to the other side
Is the Diameter, so never say die. Perimeter, distance around a circle is 2 pi R. Area is pi R squared,
How much space is in there, do you care?
Well I sure hope you do,
... | 677.169 | 1 |
Question 212281: I have to figure out the measure of the angles. The problem is "find the measure of angle T if the measure of angle T is 20 more than four times its supplement" I know the answer is 148 but I can't figure out how to get to that. I tried solving it by setting up the equation 4t+20=180 but I got 40. And ... | 677.169 | 1 |
A faster way to do it would be to use the equation for regular polygons:
180(n-2)=total # of angles
where n is the number of sides
And the total number of angles is equal to the number of sides multiplied by the angle of each side (call x the measure of each interior angle, and so it would be xn)
From x + y = 80, you c... | 677.169 | 1 |
Napoleon's Theorem Geometry
WhiteBrownPaquitaFiona asked
I have a question on the proof. This is the beginning of the proof.
The theorem states that if you have a triangle ABC and you construct equilateral triangles on each of the three sides, then the three centers of those equilateral triangles always form an equilat... | 677.169 | 1 |
Point-in-polygon: Jordan Curve Theorem
Calculating whenever a point is inside a polygon can sometimes be a hard and costly calculation. This article describes a quite cheap solution to calculate whenever a point is inside ANY closed polygon. In an open polygon it's hard to determine what's in and out so naturally it wo... | 677.169 | 1 |
Lets see how: First draw a perpendicular from the x-axis to the point P. Lets call the point on the x-axis N. Now we have a right angle triangle \triangle NOP. We are given the co-ordinates of P as (-\sqrt{3}, 1). i.e. ON=\sqrt{3} and PN=1. Also we know angle PNO=90\textdegree. If you notice this is a 30\textdegree-60\... | 677.169 | 1 |
That is, if the boat heads directly across, its path makes an angle of 51 degs with the line perpendicular to the shore.
Probability-and-statistics/445561: In a scale drawing of a house, the living room is 1 in. long. The actual length is 24 ft.
On the drawing, a hallway is 1/4 in. wide. Find the actual width.
Questio... | 677.169 | 1 |
Reciprocal Runway Math Made Easy
Reciprocal Runways – 180 Degree Opposites
Runway Numbering
The diagram shown here displays a 4,000 foot long (75 foot wide) runway with two ends. Each end of the runway is labelled with a large number. The actual pavement would have these large numbers painted on the runway at the thres... | 677.169 | 1 |
You could start with this instead, as sort of a magic trick. "I can make the bull's-eye stay in focus when I toss this shape across the room, or I can make it blurry." Amaze them with your ability to make it happen the opposite way from what they predict every time, until they figure out that you're showing them differ... | 677.169 | 1 |
Question 617271: A cruise ship sailed north for 50 km. Then, the captain turned the ship eastward through an angle of pi/6 and sailed an additional 50 km. Without using a calculator, determine an exact expression for the direct distance from the start to the finish of the cruise. Click here to see answer by nerdybill(6... | 677.169 | 1 |
In this problem, you are given a set of points. By combining these points in given order by lines you get a shape. You need to check whether it matches with S shape which could be rotated by 90, 180, 270 degree.
Depending on the type of shape it matches you need to return that number. For example if it matches with sha... | 677.169 | 1 |
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If you hit "shift" while drawing a rectangle in Microsoft Paint, it will always make a perfect square. Similarly, holding "shift" while drawing an ellipse will make a perfect circle, and holding it while drawing a line will cause the line to be perfectly horizontal, verti... | 677.169 | 1 |
Special Functions
Trigonometric Functions
Graphing Trigonometric Functions Page [1 of 3]
Now, what about the graphs of these functions. How would you actually graph them? Because we'll be looking at graphs of these trigonometric functions, so where do we go from here? Well, the graphs actually - suppose we wanted to gr... | 677.169 | 1 |
So it all starts with a much more natural object, let's not look at a calendar, because who cares. Let's instead look at the circle. And if you look at the circle, it's beautiful, the circle is really pretty, really pretty. Now, let's suppose that we have a circle, that's radius one. So the radius of this circle is one... | 677.169 | 1 |
Similar, if you want to convert the other way, what you would do is divide both sides of this by pi, and see that 180 over pi degrees equals one radian. So if you want to know how many degrees is pi over six radian, you would take pi over six and multiply it by 180 over pi and you'd get how many degrees it is. These co... | 677.169 | 1 |
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