CBSE Class 8 Answered
The ratio of interior angle to the exterior angle of a regular polygon is 5:1, find the number of sides ?
Ans -12
Asked by Mohdayaz9921 | 29 Dec, 2018, 10:28: AM
Expert Answer
Let x be the interior angle. Hence exterior angle = (180-x)
we are given that x : (180-x) = 5:1 hence
hence interior angle is 150°.
if a regular polygon has n sides, then interior angle = [(n-2)×180] / n = 150 ...............(1)
By solving eqn.(1), we get n = 12
Answered by Thiyagarajan K | 29 Dec, 2018, 11:46: AM
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