Heptagon

A heptagon

A heptagon/septagon or 7-gon is a shape with 7 sides and 7 corners.

Regular heptagon

All sides of a regular heptagon are the same length. Each corner is about 147.27°. All corners added together are about equal to 6840°.

Area

The amount of space a regular heptagon takes up is

[math]\displaystyle{ A = \frac{7}{4}a^2 \cot \frac{\pi}{7} \simeq 3.634 a^2. }[/math]

a is the length of one of its sides.


Heptagon Media