SSC CHSL 20 Dec 2015 Shift 1 Paper

Question : 140 of 200

Marks: +1, -0

If the sum of all interior angle of a regular polygon is 14 right angles, then its number of sides is

Solution:

Given, sum of interior angles of a polygon =

14×90=1260

We know that, sum of interior angles of a polygon =

(n-2)×180°

1260 = (n − 2) ×180°

n − 2 = 7 (or) n = 9

Hence, option B is the correct answer.

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