SOLUTION: A regular polygon of 9 sides has vertex angles which measure how many degrees?

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Question 200422: A regular polygon of 9 sides has vertex angles which measure how many degrees?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
The sum of the interior angles of a polygon of n sides is
(n-2)*180
For n = 9, that's 1260 degs
1260/9 = 140 degs