SOLUTION: the sum of the interior angles of a polygon is 1260 degree.what is the number of sides of this polygon

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Question 271113: the sum of the interior angles of a polygon is 1260 degree.what is the number of sides of this polygon
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
Let n=number of sides.
180(n-2)=1260
n-2=7
n=9
.
Ed