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Thread: Prove that a triangle is right angled triangle

  1. December 15th 2009, 08:18 AM #1
    jiripo
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    Prove that a triangle is right angled triangle

    How can I prove that the triangle ABC is a right angled triangle for any value x if the sides are AC = 12x +24, AB=13x +26 and
    BC=5x +10. Thanks.
    Last edited by Isomorphism; December 15th 2009 at 12:36 PM. Reason: Misleading question
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  2. December 15th 2009, 12:35 PM #2
    Lucio Carvalho
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    help for the exercise

    Hello ,
    In annexe, I show you my point of view about the exercise.
    I hope you understand.
    Bye!
    Attached Thumbnails Attached Thumbnails Prove that a triangle is right angled triangle-teorema-de-pitagoras.jpg  
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  3. December 15th 2009, 12:38 PM #3
    Isomorphism
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    Quote Originally Posted by jiripo View Post
    How can I prove that the triangle ABC is a right angled triangle for any value x if the sides are AC = 12x +24, AB=13x +26 and
    BC=5x +10. Thanks.
    I have edited your question. The answer can be obtained by using Pythogorus theorem.

    Try to show that AC^2 + BC ^2 = AB ^2.
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