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How many sides has a regular polygon whose interior angles are 120° each?


Question

How many sides has a regular polygon whose interior angles are 120° each?

Options

A) 4

B) 5

C) 6

D) 3

The correct answer is C.

Explanation:

Each exterior angle = 180 − 120 = 60
Exterior angle = 360/n
60 = 360/n
n = 360/6
= 6

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