The exterior and interior angles of each vertex of a polygon add up to 180 degrees.
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Interior angles are 180 degrees Exterior angles are 360 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.
Interior angles add up to 180 degrees Exterior angles add up to 360 degrees