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(Redirected from Octagram)
An octagon

An octagon or 8-gon is a polygon that has exactly 8 sides.

Regular octagon

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All sides of a regular octagon are the same length. Each corner is 135°. All corners added together equal 1080°.

The amount of space a regular octagon takes up is

a is the length of one of its sides.

Another way to write it is

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