WAEC Mathematics 2025 Objective — Question 29
Question 29 of 51 from the West African Examinations Council (WAEC) Mathematics 2025 Objective paper, with the correct answer and a full explanation.
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Each interior angle of a regular polygon is 168 deg. Find the number of sides of the polygon.
- A. 30Correct
- B. 36
- C. 24
- D. 18
Explanation
Interior angle = [(n-2)x180]/n. Setting 168=[(n-2)x180]/n gives 168n=180n-360, so 12n=360, n=30.
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