10th Class Mathematics Coordinate Geometry Question Bank MCQs - Coordinate Geometry

  • question_answer
    The point which lies on the perpendicular bisector of the line segment joining the points \[A(-2,-5)\] and \[B(2,5)\] is: (NCERT EXEMPLAR)

    A) \[(0,0)\]

    B) \[(0,2)\]

    C) \[(2,0)\]

    D) \[(-2,0)\]

    Correct Answer: A

    Solution :

    [a] We know that, the perpendicular bisector of any line segment divides the line segment into two equal parts i.e., the perpendicular bisector of the line segment always passes through the mid-point of the line segment.
    Since, mid-point of any line segment which passes through the points \[({{x}_{1}},{{y}_{1}})\] and \[({{x}_{2}},{{y}_{2}})=\,\left( \frac{{{x}_{1}}+{{x}_{2}}}{2},\frac{{{y}_{1}}+{{y}_{2}}}{2} \right)\]
    \[\therefore \]Mid-point of the line segment joining the
    points
    \[A(-2-5)\]and \[B(2,5)=\left( \frac{-2+2}{2},\frac{-5+5}{2} \right)=(0,0)\]
    Hence, \[(0,0)\] is the required point which lies on the perpendicular bisector of the line segment AB.


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