Tricontagon

A tricontagon is a polygon with 30 sides. The measure of each angle of a regular tricontagon is 168 degrees, and the area with side length a is given by

$A = \frac{15}{2}a^2 \cot \frac{\pi}{30} \simeq 71.3577 a^2.$

See also

geometry

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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See also: Tricontagon, 30 (number), Chiliagon, Decagon, Dodecagon, Enneadecagon, Enneagon, Geometry