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Math Help - triangles

  1. #1
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    triangles

    which of the following cannot b the lengths of a triangles 3 sides

    a-4,6,3
    b-3,10,7
    c-13,2,14
    d-1,5,6

    explain
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  2. #2
    A riddle wrapped in an enigma
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    Quote Originally Posted by rebecca12345 View Post
    which of the following cannot b the lengths of a triangles 3 sides

    a-4,6,3
    b-3,10,7
    c-13,2,14
    d-1,5,6

    explain
    I answered this over in the Chat Room where you posted it.

    Remember this rule: The sum of the two smaller sides of a triangle must be greater than the third side. So which ones fail this rule? Looks like you have 2 answers that won't make triangles.
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  3. #3
    MHF Contributor Quick's Avatar
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    Quote Originally Posted by masters View Post
    I answered this over in the Chat Room where you posted it.

    Remember this rule: The sum of the two smaller sides of a triangle must be greater than the third side. So which ones fail this rule? Looks like you have 2 answers that won't make triangles.
    I remember a quick real world example for this rule. I think it was mentioned in this forum before.

    Take three toothpicks, can you make a triangle out of them? (I should hope so)

    Now take two toothpicks and a meter stick, can you get the two toothpicks to stretch ALL the way over to touch both ends of the meter stick, the answer is you can't. A side can't be bigger than the two other sides put together
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