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Question
Find the number of sides in a polygon if the sum of its interior angle is: 16 right-angles.
Solution
Let no. of sides = n
Sum of angles of polygon = 16 right angles = 16 x 90 = 1440°
(n – 2) x 180° = 1440°
n – 2 = `1440/180`
n – 2 = 8
n = 8 + 2
n = 10
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