Rotating Polygons
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A triangle rotates in the foreground atop a regular polygon with vertices on the unit circle. The area of the polygon is displayed.
Contributed by: Ane Ocerin (May 2011)
Open content licensed under CC BY-NC-SA
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"Rotating Polygons"
http://demonstrations.wolfram.com/RotatingPolygons/
Wolfram Demonstrations Project
Published: May 12 2011