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What is the size of each interior angle of a 12-sided regular polygon?

Mathematics
JAMB 2011

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 Answer: Option B
Explanation
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

There is an explanation video available below.


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Explanation Video

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