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WAEC Mathematics 2020 Question 29

Question 29

Angles and Polygons

Each interior angle of a regular polygon is 168°. Find the number of sides of the polygon.

  1. A.30
  2. B.36
  3. C.24
  4. D.18
Show the answer and explanation

Answer: A (30)

Explanation

Each exterior angle is 180° − 168° = 12°, so the number of sides is 360 ÷ 12 = 30.