An interior angle of a regular polygon is 5 times each ex...
An interior angle of a regular polygon is 5 times each exterior angle. How many sides has the polygon?
15
12
9
6
Correct answer is B
Let the interior angle = xo
interior angle = 5xo (sum of int. angle ann exterior)
(angles = angle or straight line)
6x = 180
x = 1806
x = 30o
no. of sides = sum of exterior anglesexterior angle
= 36030 = 12
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