What is the measure of an Interior angle of a regular polygon having (a) 5 side (b) 9 side (c) 10 side (d) 12 side
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The formula of interior angle is (n-2)180
n means side
(a) (5-2)180 = 3×180 = 54
(b) (9-2)180 = 7×180 = 1260
(c) (10-2)180 = 8×180 = 1440
(d) (12-2)180 = 10×180 = 1800
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