2. Questions Bank
  3. JEE Main & Advanced
  4. Mathematics
  5. Three Dimensional Geometry

JEE Main & Advanced Mathematics Three Dimensional Geometry Question Bank Self Evaluation Test - Introduction to Three Dimensional Geometry

  • question_answer
    Points ( -2, 4, 7), (3, -6, -8) and (1, -2, -2) are

    A) Collinear

    B) Vertices of an equilateral triangle

    C) Vertices of an isosceles triangle

    D) None of these

    Correct Answer: A

    Solution :

    [a] Here, \[\frac{\left( 3-\left( -2 \right) \right)}{1-3}=\frac{-6-4}{-2-(-6)}=\frac{-8-7}{-2-(-8)}\] \[\Rightarrow -\frac{5}{2}=-\frac{5}{2}=-\frac{5}{2}\]. Obviously, points are collinear.


You need to login to perform this action.
You will be redirected in 3 sec spinner