WAEC Mathematics 1998 Question 50

Question 50

Angles and Polygons

Three of the angles of a hexagon are each x°. The others are each 3x°. Find x.

  1. A.30°
  2. B.40°
  3. C.60°
  4. D.80°
  5. E.120°.
Show the answer and explanation

Answer: C (60°)

Explanation

Hexagon angles add to 720°: 3x + 9x = 720, so x = 60°.