Question 785293: How many sides has a regular polygon whose interior angle is 156
Answer by josgarithmetic(39617)   (Show Source):
You can put this solution on YOUR website! This is something I answered several weeks ago. I might try redoing it again now and giving the solution, but instead, I will only say this:
Start with a triangle, add sides one by one, and look for a pattern.
Number of Sides______________Total Angle
3____________________________180
4____________________________360
5____________________________?
6____________________________?
7____________________________?
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