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JAMB Mathematics 2012 Question 26

Question 26

Angles and Polygons

The angles of a polygon are given by x, 2x, 3x, 4x and 5x respectively. Find the value of x.

  1. A.24°
  2. B.30°
  3. C.33°
  4. D.36°
Show the answer and explanation

Answer: D (36°)

Explanation

Five angles make a pentagon, whose angles add to 540°: 15x = 540, so x = 36°.