Dodecagon
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![](http://upload.wikimedia.org/wikipedia/commons/thumb/3/39/Dodecagon.svg/220px-Dodecagon.svg.png)
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
Perimeter[change | change source]
The perimeter of a regular dodecagon is
The variable P represents the perimeter, and the variable s represents one side.