Question

9) Find the numbers of sides of a regular polygon if its angles sum is as given
a) 1620" b) 1260°​

Answer 1

Step-by-step explanation:

sum =(n-2)*180

where, n is no. of sides

(a).sum=1620

1620=(n-2)*180

9=(n-2)

11=n

(b)sum=1260

1260=(n-2)*180

7=n-2

n=9

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