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WAEC Mathematics 2013 Objective — Question 40

Question 40 of 50 from the West African Examinations Council (WAEC) Mathematics 2013 Objective paper, with the correct answer and a full explanation.

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The sum of the interior angles of a regular polygon is 1800°. How many sides has the polygon?

  • A. 16
  • B. 12Correct
  • C. 10
  • D. 8

Explanation

Sum of interior angles = (n−2)×180° = 1800°. n−2 = 10. n = 12 sides.

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