The exterior angles sum to 3600 , but the interior angles sum to 23400.
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What is the sum of the exterior angles of a 23 gon
find the sum of the measures of the interior angles of 13-gon.
The sum of the interior angles of a n-gon is (n-2)*180 degrees. So the sum of the int angles of a 25-gon is 23*180 = 4140 degrees. If the 25-gon is regular, then each of its interior angles is equal. In this case, it is 4140/25 = 165.6 degrees.
The sum of the exterior angles of a polygon, with any number of sides, is 360 degrees.
The sum of the interior angles add up to 3240 degrees.