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Math Help - Having some trouble with some analytical geography (High School level) (altitude)

  1. #1
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    Having some trouble with some analytical geography (High School level) (altitude)

    Hi,

    I am having a bit of trouble with this new module we started on analytical geometry. I am supposed to find the equation of the altitude drawn from a vertex, but nowhere in the book does it explain what altitude is. The information I am given is 3 x y coordinates on a Cartesian graph. Could anyone explain what they are looking for?

    Thanks!
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  2. #2
    Senior Member jakncoke's Avatar
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    Re: Having some trouble with some analytical geography (High School level) (altitude)

    can you prove those 3 coordinates?
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    Re: Having some trouble with some analytical geography (High School level) (altitude)

    Quote Originally Posted by jakncoke View Post
    can you prove those 3 coordinates?
    They are A(-1,5), B(2,-3), C(7,2). I am supposed to find the equation of the altitude drawn from vertex A.
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  4. #4
    Senior Member MacstersUndead's Avatar
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    Re: Having some trouble with some analytical geography (High School level) (altitude)

    I'm going to assume that they want the altitude of the triangle ABC.

    An altitude of a triangle is defined to be a line through a vertex and perpendicular to a line containing the base (the opposite side of the triangle).

    In this example, they are looking for the equation of the line that passes through A and is perpendicular to BC (as a line, not a line segment)
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