SOLUTION: Determine the number of diagonals in a decagon

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Question 1158259: Determine the number of diagonals in a decagon
Answer by ikleyn(52781)   (Show Source): You can put this solution on YOUR website!
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For any convex polygon with "n" vertices / (sides), the number of its diagonals is .


For decagon (n= 10) the number of diagonals is   =  = 5*7 = 35.    ANSWER

Solved.


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