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    Exclamation pythagorean theorem help

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    Re: pythagorean theorem help

    Because the two triangles are similar, we know that whenever a length from the smaller triangle is multiplied by the scaling factor (k) we'll get the corresponding length from the bigger triangle.

    From this we can see that 4k = 6 and thus k = 3/2.

    Now use Pythagoras to find length AB. Since you have the scaling factor you should be able to find DB.
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    Re: pythagorean theorem help

    Quote Originally Posted by vegasgunner View Post
    Oh come on! Do you understand similar triangles?

    \Delta ABC\sim \Delta DBE~?
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    Re: pythagorean theorem help

    Quote Originally Posted by Plato View Post
    Oh come on! Do you understand similar triangles?

    \Delta ABC\sim \Delta DBE~?
    That doesn't help anyone Plato!
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    Re: pythagorean theorem help

    Prove it has given a sufficient hint. you could also write for similar triangles the ratio of sides
    AB /BD = AC/DE = BC / BE
    AB /BD = BC / BE = 6/4
    10 /BD = 8 / BE = 3/2
    Now you can find the sides you want to find.
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