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Thread: Convex polygons

  1. October 29th 2007, 05:56 PM #1
    Incendiary
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    Convex polygons

    What is the quickest way to solve this?

    If a convex polygon has n sides and 25n diagonals, find the value of n.

    Thanks!
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  2. October 29th 2007, 06:20 PM #2
    SnipedYou
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    Hmm...I think you would solve it like this

    \frac{n(n-3)}{2}=25n

    Solve for n.

    I got n = 53 when solving. I hope that's right sorry if its not.
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