the sum of the interior Angles of a polygon is 1980° find the number of sides of the polygon
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Answer:
The polygon has 13 sides
Step-by-step explanation:
S = (n-2) * 180
S = 1980
1980 = (n-2) * 180
n-2 = 1980/180
n-2 = 11
n = 11 + 2
n = 13
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