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JAMB Mathematics 2018 Objective — Question 13

Question 13 of 39 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2018 Objective paper, with the correct answer and a full explanation.

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

A. 6
B. 9
C. 8
D. 12Correct

Explanation

(n-2)180/n = 150 → 180n−360=150n → 30n=360 → n=12.

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