Pentacontagon
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In geometry, pentacontagon is a polygon with 50 sides. The measure of each angle of a regular pentacontagon is 172.8°, and the area with side length a is given by
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Triangle | Quadrilateral | Pentagon | Hexagon | Heptagon | Octagon | Enneagon (Nonagon) | Decagon | Hendecagon | Dodecagon | Triskaidecagon | Pentadecagon | Hexadecagon | Heptadecagon | Enneadecagon | Icosagon | Icosihenagon | Tricontagon | Pentacontagon | Hectagon | Chiliagon | Myriagon |