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In fig. 10, A , B , C and D are four poi...

In fig. 10, `A , B , C` and `D` are four points, and no three points are collinear. `A C` and `B D` intersect at `Odot` there are eight triangle that you can observe. Name all the triangles.

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Knowledge Check

  • Three points with position vectors, a, b, c are collinear if

    A
    `a xx b + b xx c + c xx a = 0`
    B
    `a, b + b .c + c . A =0`
    C
    `a. (b xx c) = 0`
    D
    `a + b + c = 0`

  • Given four points A, B, C, D such that three points ABC are collinear. By joining these points in order to get a closed figure, we get :-

    A
    A Straight line
    B
    A Triangle
    C
    A Quadrilateral
    D
    None of these

  • A, B, C, D and E are coplanar points and three of them lie in a straight line. What is the maximum number of triangles that can be drawn with these points as their vertices ?

    A
    5
    B
    9
    C
    10
    D
    12

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