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OpenStudy (anonymous):
what is the measure of a single angle in a regular octagon is (4x + 12)°?
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OpenStudy (campbell_st):
the angle sum of an octagon is (n -2)180 where n is the number of sides (8 - 2)*180 = 1080 so each interior angle is 1080/8 or 135 so if the interior angle is 4x + 12 = 135 4x = 123 x = 30.75
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