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Thread: Stuck on a triangle question

  1. #1
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    Stuck on a triangle question

    Hi!!

    i am so stuck on this question, if anyone can help??


    There is a triangle ABC, with a line BD (D is located between AC).
    AD = x+7
    DC = x+6
    AB = x+7

    Angle ABD = ACB

    Find the value of x. I've attached a picture of it.

    I dont know where to start on this one!! AC = 2X+11; AB = x+7; but i cant work out how to get BC! and if I do; i dont know how that helps!! it feels like the picture is missing something! any ideas!!

    I feel
    Attached Thumbnails Attached Thumbnails Stuck on a triangle question-img_0792.jpg  
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  2. #2
    MHF Contributor
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    Re: Stuck on a triangle question

    Angle ABD = ACB says

    AB is tangent to the circumcircle of BDC
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