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Post-UTME Mathematics 2009 Objective — Question 12

Question 12 of 15 from the Post-UTME Screening (Post-UTME) Mathematics 2009 Objective paper, with the correct answer and a full explanation.

The sum of the interior angles of a regular polygon is 30 right angles. How many sides does the polygon have?

A. 17 sidesCorrect
B. 26 sides
C. 30 sides
D. 4 sides

Explanation

30 right angles = 2700°. (n-2)×180=2700 gives n=17.

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