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10th Class Mathematics Coordinate Geometry Question Bank Coordinate Geometry

  • question_answer
    Three points \[A(1,-2)\]\[B(3,4)\] and \[C(4,7)\]form

    A)  A straight line

    B)  An equilateral triangle

    C)  A right-angled triangle

    D)  None of these

    Correct Answer: A

    Solution :

    Distance from A to \[B=\sqrt{40}=2\sqrt{10}\] units Distance from B to \[C=\sqrt{10}\] units Distance from C to \[A=3\sqrt{10}\] units Since, \[AB+BC=AC\] \[\therefore \]  Points lie on a straight line.


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