Pentacontagon

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

$A = \frac{25}{2}a^2 \cot \frac{\pi}{50} \simeq 198.682 a^2.$

Polygons
Triangle \| Quadrilateral \| Pentagon \| Hexagon \| Heptagon (Septagon) \| Octagon \| Enneagon \| Decagon \| Hendecagon \| Dodecagon \| Triskaidecagon \| heptadecagon \| enneadecagon \| icosagon \| 30-gon \| 50-gon \| hectagon \| chiliagon \| myriagon

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Pentacontagon

See also: Pentacontagon, 50 (number), Chiliagon, Decagon, Dodecagon, Enneadecagon, Enneagon, Geometry