(12 - 2) * 180 = 1,800/12 = 150
(8 - 2) * 180 = 1,080/8 = 135
B. 8 sides
Here we have to use the following formula to find the number of sides,n
ANd S=135
So we will get
135n = 180n -360
Subtracting 180n to both sides
-45n =-360
Dividing both sides by -45
n = 8 .
So the number of sides =8. And the correct option is B .
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