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Which regular polygon would have each of its interior angles measure 120°? hexagon heptagon octagon nonagon?

Which regular polygon would have each of its interior angles measure 120°? hexagon heptagon octagon nonagon?
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Which regular polygon would have each of its interior angles measure 120°? hexagon heptagon octagon nonagon?

User Jerameel Resco
by
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1 Answer

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Sum of angles of regular polygon = 180*(n-2), n - number of sides, or angles.

120n=180*(n-2)

120n=180n-360
180n-120n=360
60n =360
n=6

It is hexagon.
User Starsha
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