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A dodecagon

A dodecagon or 12-gon is a shape with 12 sides and 12 corners.

Regular dodecagon[change | change source]

All sides of a regular dodecagon are the same length. Each corner is 150°. All corners added together equal 1800°.

Area[change | change source]

The amount of space a regular dodecagon takes up is

The variable A represents the area, and the variable a represents the apothem.

Perimeter[change | change source]

The perimeter of a regular dodecagon is

The variable P represents the perimeter, and the variable s represents one side.