WAEC - Mathematics (2001 - No. 35) | ExamPlay

WAEC - Mathematics (2001 - No. 35)

Which of the following is not the the size of an exterior angle of a regular polygon?

15^o

18^o

20^o

21^o

Explanation

The size of an exterior angle = \(\frac{360}{n}\)

From the options, all options can perfectly divide 360°, except 21°.

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