The interior angle of a regular polygon is twice the exte...
The interior angle of a regular polygon is twice the exterior angle. How many sides has the polygon?
5
6
8
9
Correct answer is B
Let the exterior angle = d
Note: Exterior angle + Interior angle = 180°
⟹ d + 2d = 180°
3d = 180° ⟹ d = 60°
Recall, exterior angle = 360no of sides
∴
= 6 sides
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