<PRE><B>Question 859614</B>
a)



S = 180(n-2)



1080 = 180(n-2)



1080/180 = n-2



6 = n-2



6 + 2 = n



8 = n



n = 8



There are 8 sides.



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b)



Divide the sum 1080 by 8 to get 1080/8 = 135



Each interior angle is 135 degrees. This is if the polygon is regular.



Note: this is a regular octagon.</PRE>