2011
Mathematics
JAMB
What is the size of each interior angle of a 12-sided regular polygon?
A.
120°
B.
150°
C.
30°
D.
180°
Correct Answer: 150°
Explanation
Interior angle = (n - 2)180 but, n = 12 = (12 -2)180 = 10 x 180 = 1800 let each interior angle = x x = (n−2)180/n x = 1800/12 = 150°
Interior angle = (n - 2)180 but, n = 12 = (12 -2)180 = 10 x 180 = 1800 let each interior angle = x x = (n−2)180/n x = 1800/12 = 150°THIS WEEK's
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