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Archimedes Lower Bound For Pi

Archimedes method for lower bound of pi with inscribed regular polygons. Move the slider to go from 6 to 12 to 24 to 48 to 96 sides. Click the two checkboxes to see the method of bisecting angle BCD and using the angle bisector theorem, similar triangles, and the pythagorean theorem to get the side of the next figure.