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A regular polygon has 9 sides. What is the size of one of its exterior…

A regular polygon has 9 sides. What is the size of one of its exterior angles?
  • A.
    20o
  • B.
    40o
  • C.
    90o
  • D.
    140o
Correct Answer: Option B
Explanation

Exterior angle (=frac{360}{n}) where n = no of sides
(=frac{360}{9}=40^{circ})

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