This worksheet lets you explore how regular polygons appoximate a circle.  You can set the radius of the circle and the number of equally spaced points around the circle used for a regular polygon.

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Check boxes let you show or hide the circle, the regular polygon, and the triangle defined by the center of the circle and the first edge of the polygon.

Mike May, S.J., August 10, 2007, Created with GeoGebra

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Last updated By Mike May, S.J., August 11, 2007.