SOLUTION: The diagram shows 3 sides of a regular polygon. Each interior angle of the regular polygon is 140 degrees, work out the number of sides of the regular polygon.

Question 612390: The diagram shows 3 sides of a regular polygon.
Each interior angle of the regular polygon is 140 degrees, work out the number of sides of the regular polygon.
Answer by vleith(2983) (Show Source): You can put this solution on YOUR website!
Look at this URL
http://www.mathsisfun.com/geometry/interior-angles-polygons.html
Read it and see how one can build on what you know about triangles and extend that into the general rule.
In your specific case,

So simplify and solve for n
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