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Math Help - Relative Triangles

  1. #1
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    Relative Triangles

    Here is the maths question diagram I made: Tri Tri by ~benjaminpott on deviantART

    I have absolutely no idea how to find y let alone prove if they are congruent.

    Any help would be amazing!

    Ben

    I know the lines in the diagram do not look paralell, but they are meant to be.
    Last edited by mr fantastic; July 15th 2010 at 06:23 PM. Reason: Merged posts.
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  2. #2
    Senior Member eumyang's Avatar
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    When you say that the lines are parallel, do you mean this?

    Relative Triangles-similartriangles.jpg

    If so, then just use a proportion:
    \frac{y}{3.7} = \frac{1.7}{6.4}
    ... and solve for y.
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