is assumed throughout.

Angles

Any polygon has as many corners as it has sides. Each corner has several angles. The two most important ones are:
* Interior angle - The sum of the interior angles of a simple n-gon is (''n'' - 2) × [[Pi radians or (''n'' - 2) × 180 degrees. This is because any simple n-gon ( having n sides ) can be considered to be made up of (''n'' - 2) triangles, each of which has an

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