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Math Help - Help needed on "Triangle Questions"

  1. #1
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    Help needed on "Triangle Questions"

    Im taking an online geometry course and myteacher was rather vague in explaining how to do these problems, any help at all on how to do them would be much appreciated as i rather need to know

    12. AB = 8, CD = 2, BC = ________

    13. Find the value of x.

    14. Find the value of x.
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  2. #2
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    I may be mistaken, but it seems like there should be more information for each of those problems.
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  3. #3
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    Iemailed her and this was her response:

    On number 13, the altitude here is the geometric mean between each part of the hypotenuse. So, set up a proportion like this and solve. 4/x=x/5.

    On number 15, Ab is the hypotenuse of the large triangle. Use 30-60-90 rules to find AC and then CB since the large triangle is a 30-60-90.

    On number 17, OF=4 (half of 8) and OB=3 (half of 6). Use Pythagorean theorem to find EO in triangle BOE since it too is a right triangle.
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  4. #4
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    More information please

    Hello Fructose

    Sorry, but this still doesn't make any sense. If you want help, you must supply us with the complete text and, if necessary, diagram for each question.

    Grandad
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  5. #5
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    I was asked the same thing by my ib teacher. they are very vague and non-descriptive.
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