Wednesday, April 13, 2011

Circle Approximation Graph

1.) Move slider r below to adjust the radius of the circle.
2.) Move slider n and observe what happens.
3.) Make a conjecture about your observations

This is a Java Applet created using GeoGebra from - it looks like you don't have Java installed, please go to

The area of a circle can be approximated by inscribing and circumscribing a polygon with n sides. As the number of sides of the inscribed/circumscribed polygon increases, their areas approach the area of the circle.

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