Arbelos Area Visual Proof

This is a short, animated

If all angles in a quadrilateral are right angles, then it's a rectangle. (we only need to show that three angles are right angles ...

Q: Show that for fixed value of radius r1, the perimeter of the

An

This is an animation of a classic

Arbelos

http://demonstrations.wolfram.com/TheArbelos The Wolfram Demonstrations Project contains thousands of free interactive ...

This video shows the

Source HAESE Math10E. I really love this book. The

A test video that describes the

Two semi-circles within a bigger circle make this geometrical shape,

Geometry Project.

http://demonstrations.wolfram.com/TheArbelos/ The Wolfram Demonstrations Project contains thousands of free interactive ...

This is a short, animated

http://demonstrations.wolfram.com/TwinsOfArbelosAndCirclesOfATriangle The Wolfram Demonstrations Project contains ...

This is a short, animated

We use Math Illustrations to draw a picture of an

In this video, we show how to find the

Watch to have fun with Circles!