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Show that the lines x-7y-22=0, 3x+4y+9=0...

Show that the lines `x-7y-22=0, 3x+4y+9=0` and `7x+y-54=0` form a right angled isosceles triangle.

Answer

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Knowledge Check

  • The lines x-7y-22=0, 3x+4y+9=0, 7x+y-54=0

    A
    form an equilateral triangle
    B
    are concurrent
    C
    form an isosceles triangle
    D
    form a right angled isosceles triangle

  • The lines 2x-y-1=0, 3x-y-7=0, 3x-2y+4=0

    A
    form an equilateral triangle
    B
    are concurrent
    C
    form an isosceles triangle
    D
    form a right angled isosceles triangle

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