Sum of interior =(N-2) × 180

Question

anyone knows ?

Answer 1

The sum of interior angle of an n-gon = (n-2) * 180 degrees
Each interior angle of a regular n-gon = (n - 2) * 180 / n degrees

The sum of exterior angle of an n-gon = 360 degrees
Each exterior angle of a regular n-gon = 360 / n degrees

Answer 2

It's a formula for finding the sum of the interior angles of a polygon, with n sides.

Answer 3

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