JAMB Mathematics 2018 Objective — Question 1
Question 1 of 39 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2018 Objective paper, with the correct answer and a full explanation.
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A regular polygon with (2m+1) sides has each interior angle equal to 144°. The value of m is
- A. 4½Correct
- B. 5
- C. 8
- D. 10
Explanation
(n-2)180/n = 144 → 180n-360=144n → 36n=360 → n=10. Since n=2m+1=10, m=4.5.
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