SOLUTION: If possible, give the name of the convex polygon in which the sum of the interior angles equals 1260°

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Question 322887: If possible, give the name of the convex polygon in which the sum of the interior angles equals 1260°
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
The sum (S) of the interior angles of a polygon with n sides is given by:
S+=+%28n-2%29180 and this is given as 1260 degrees, so...
%28n-2%29180+=+1260 Divide both sides by 180.
n-2+=+7 Add 2 to both sides.
n+=+9
The polygon has 9 sides and this is called a nonagon.