The Polygon-Angle Sum Theorems
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If the measure of an exterior angle of a regular polygon is 24, how many sides does the polygon have?
15
What is the measure of one interior angle of a regular 12-gon?
150
What is the sum of the interior angle measures of a 20-gon?
3,240
What is the value of x in the regular polygon below?
40
What is the measure of an exterior angle of a regular octagon?
45