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Math Help - Triangle Proof

  1. #1
    Junior Member
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    Triangle Proof

    Hello,
    I know WHY a triangle is similar to another, I just have trouble presenting it on tests as a formal solution.

    Can someone provide a full, formal solution when proving that each of the following triangles are similar? (disregard the crappy scale of my drawings)

    1.


    2. Along with proving they're similar, find the value of the variable.

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  2. #2
    Global Moderator

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    For the first triangle.

    <BAE=<EDC ---> Postulate #5
    And,
    <AEB=<CED ---> Vertex Angles
    Thus,
    Triangle ABE ~ Triangle CED
    Because they have two equal angles
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  3. #3
    Newbie
    Joined
    Jan 2007
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    Re

    If it helps try this program, the program is desingned for triangle testing.
    I made the program, so if you need help try my program and see if it's the solution to your problems

    http://www.mathhelpforum.com/math-he...n-program.html
    Last edited by ThePerfectHacker; January 11th 2007 at 06:44 PM.
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