What is the size of each interior angle of a 12... - JAMB Mathematics 2011 Question
What is the size of each interior angle of a 12-sided regular polygon?
A
120o
B
150o
C
30o
D
180o
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Correct Option: B
Interior angle = (n - 2)180
but, n = 12
= (12 -2)180
= 10 x 180
= 1800
let each interior angle = x
x = (\frac{(n - 2)180}{n})
x = (\frac{1800}{12})
= 150o
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