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Math Help - coordinate geometry

  1. #1
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    coordinate geometry

    how can yu find equation of triangle in 2d plane
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  2. #2
    Senior Member Sambit's Avatar
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    Geometrically, a triangle is NOT what we call a curve; so it does not have any particular [i]form[i] of equation. A triangle in a 2d plane is constructed by 3 straight lines, no two of which are parallel. Once you know the equations of those 3 straight lines, they represent a triangle.
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  3. #3
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    Any equation in two dimensions represents a curve, not a figure like a triangle. You could, for example, write three equations representing the three sides of the triangle.
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  4. #4
    Senior Member Sambit's Avatar
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    Quote Originally Posted by HallsofIvy View Post
    Any equation in two dimensions represents a curve, not a figure like a triangle. You could, for example, write three equations representing the three sides of the triangle.
    That is what I wanted to say. No single equation can give you any triangle.
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