geometry

triangle GHE
GH=10
HE = 17
hypotenuse GE =21
HF is an altitude

Find HF

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asked by becky
  1. 10, 17, 21 IS NOT a Right triangle, no hypotenuse here

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    posted by Damon
  2. In general

    h = 2*area/base
    here the base is EG = 21

    the area is
    sqrt[ s(s-a)(s-b)(s-c) ]
    where s = (a+b+c)/2

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    posted by Damon

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