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OpenStudy (anonymous):
What is the sum of the measures of the interior angles of a regular polygon where a single exterior angle measures 30°?
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OpenStudy (anonymous):
Exterior angle = 30 Sum of all exterior angles = 360 Number of sides of polygon = n = 360/30 = 12 Sum of all interior angles = 180(n-2) = 180(12-2) = 1800 degrees
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