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A hendecagon

A hendecagon or 11-gon is a shape with 11 sides and 11 corners.

Regular hendecagon[change | change source]

All sides of a regular hendecagon are the same length. Each corner is 147.27°. All corners added together equal 1619.97°.

Area[change | change source]

The amount of space a regular hendecagon takes up is

a is the length of one of its sides.