The interior angle of a regular polygon is 156 . Find the number of sides of the polygon
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{( n - 2) * 180 °} / n = interior angle of a regular polygon
therefore
(n-2) * 180° = 156°n
180°n - 360° = 156°n
24°n = 360°
n = 360°÷24°
n = 15
therfore the polygon has 15 sides.
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