WAEC Mathematics 2018 Objective — Question 20
Question 20 of 50 from the West African Examinations Council (WAEC) Mathematics 2018 Objective paper, with the correct answer and a full explanation.
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The angles of a polygon are x, 2x, 2x, (x+30°), (x+20°) and (x−10°). Find the value of x.
- A. 45°
- B. 84°
- C. 85°Correct
- D. 95°
Explanation
Sum of interior angles of hexagon = 720°. 8x+40=720 → x=85°.
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