The interior angle of a regular polygon is one-third of its
interior angle. Find the number of sides of the polygon.
pls tell......pls
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Sum of exterior and interior angles is 180 deg.
If the interior angle is 3x, the exterior angle is x. Hence 3x+x = 4x = 180 or x = 45. The interior angle is 135 deg. So the polygon has 360/45 = 8 sides or it is a regular octagon
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