If the sum of the interior angles of a polygon is 3060° ,find the sum of its exterior angles
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If the sum of the interior angles of a polygon is 3060°, how many sides does the polygon have? Since we know the sum, substitute it in for S(n) and solve for n. 3060 over 180 3060 180 = 180 (n minus 2) over 180 180 (n − 2) 180 So the polygon has 19 sides.
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