find the number of sides of a polygon if the sum of interior angle is. (a) 1620
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sum of interior angle is 1620
number of side= x
sum of interior angle=x*180
1620=x*180
1620/180=x
9=x
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Answer:
answer is 9
Step-by-step explanation:
sum of all angles is = 1620
no. of side= x
sum of interior angle = 180°
= 180÷1620
side = 9
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