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Math Help - Triangle Measurements

  1. #1
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    Triangle Measurements

    Ah, sorry for the general title I can't remember what the name for this stuff is. I made a picture of 3 of the problems (attached) on my study guide for my 9 weeks test tomorrow b/c I need help. I can't figure anything out. I don't need the answers (though it would help) I need someone to explain it so I can do it on other problems tomorrow. Thanks
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  2. #2
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    Quote Originally Posted by leedownen15 View Post
    Ah, sorry for the general title I can't remember what the name for this stuff is. I made a picture of 3 of the problems (attached) on my study guide for my 9 weeks test tomorrow b/c I need help. I can't figure anything out. I don't need the answers (though it would help) I need someone to explain it so I can do it on other problems tomorrow. Thanks
    For all three of these questions you need to look at all of the right angle triangles you have (there are 3 in each) and apply pythagoras theorem to them. You will then end up with a series of equations that hopefully you can solve for the required unknown.

    Hopefully that's enough to get you started, if you need more help just say so.
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  3. #3
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    similar right triangles ...

    in all three problems, let the inner altitude have length = a

    1. \frac{4}{a} = \frac{a}{6}

    2. \frac{2}{a} = \frac{a}{7} solve for a , then use Pythagoras to find x

    3. use Pythagoras to find a , then \frac{3}{a} = \frac{a}{y}
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