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A regular polygon has 150o as the size of each interior angle. How many sides does it ...

A regular polygon has 150o as the size of each interior angle. How many sides does it have?
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  • A 12
  • B 10
  • C 9
  • D 8
Correct Answer: Option A
Explanation:
Sum of interior angles of a polygon = each interior ∠x n
(n-2)180 = 150 x n
180n - 360 = 150n
180n-150n = 360
30n = 360
n = 360/30
n = 12 sides

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