257-gon

In geometry, a 257-gon is a polygon with 257 sides. The sum of the interior angles of any non-self-intersecting 257-gon is 45,900°.

== Regular 257-gon == The area of a regular 257-gon is (with ) A = \frac{257}{4} t^2 \cot \frac{\pi}{257}\approx 5255.751t^2.