passwella.
Menu

Unilorin Post-UTME Mathematics 2022 (Model questions) Question 11

Question 11

Angles and Polygons

Find the number of sides of a regular polygon if the size of each interior angle is 150°

  1. A.9
  2. B.12
  3. C.10
  4. D.14
Show the answer and explanation

Answer: B (12)

Explanation

Each exterior angle = 180° − 150° = 30°, and n = 360° ÷ 30° = 12.