SOLUTION: The sum of the measure of the interior angles of a polygon is 1980°. What polygon is it?

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Question 760534: The sum of the measure of the interior angles of a polygon is 1980°.
What polygon is it?
Found 2 solutions by stanbon, Alan3354:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The sum of the measure of the interior angles of a polygon is 1980°.
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(n-1)*180 = 1980
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n-1 = 11
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n = 12
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Ans: duodecagon
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Cheers,
Stan H.
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Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
The sum of the measure of the interior angles of a polygon is 1980°.
What polygon is it?
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1980 = 180*(n-2)
n-2 = 11
n = 13 sides
--> 13agon, there might be a name for it.