Sainik School Entrance Exam 2018 Solved Paper

Question : 8 of 150

Marks: +1, -0

How many sides does a regular polygon have, wherein, whose interior angle is eight times its exterior angle ?

Solution:

(c)

\I=8 E

We know that,

\I+\E=180

So,

8 \E+\E=180 ⇒ E=20

Hence,

n={360}/{E}={360}/{20}=18

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