Which of the following is not the the size of a... - WAEC Mathematics 2001 Question
Which of the following is not the the size of an exterior angle of a regular polygon?
A
15o
B
18o
C
20o
D
21o
correct option: d
The size of an exterior angle = \(\frac{360}{n}\)
From the options, all options can perfectly divide 360°, except 21°.
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