Interior angles are 180 degrees
Exterior angles are 360 degrees
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The exterior and interior angles of each vertex of a polygon add up to 180 degrees.
Exterior angles add up to 360 degrees Interior angles add up to 3780 degrees
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The exterior angles sum to 3600 , but the interior angles sum to 23400.
An interior angle of a triangle is the angle between two edges, measured inside the triangle. An exterior angle is formed by extending one of the edges outside the triangle, and measuring between that extension and the adjacent original side of the triangle. The sum of the interior angle and exterior angle at any given corner is always 1800 (which is Pi radians).