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A heptagon

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

Regular heptagon[change | change source]

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

Area[change | change source]

The amount of space a regular heptagon takes up is

a is the length of one of its sides.