SOLUTION: A polygon is such that when all diagonals from one vertex are drawn, eleven triangles are formed. How many sides does the polygon have?

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Question 461252: A polygon is such that when all diagonals from one vertex are drawn, eleven triangles are formed. How many sides does the polygon have?
Answer by Gogonati(855) About Me  (Show Source):
You can put this solution on YOUR website!
We know that the number of the diagonals from a vertex of the polygon is three less then the number of the sides.
In our case since we have eleven diagonals then the number of sides is 11-3=8, thus our polygon is an octagon.