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The vertices of quadrilateral ABCD are A...

The vertices of quadrilateral ABCD are A(5,-1) B(8,3), C(4,0) and D(1,-4). Prove that ABCD is a rhombus.

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The vertices of a reactangle ABCD are A (-1, 0) B (2,0), C (a,b) and D(-1, 4). Then the length of the diagonal AC is

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Knowledge Check

  • The area of the quadrilateral ABCD where A(0,4,1), B(2,3,-1), C(4,5,0) and D(2,6,2), is equal to

    A
    9 sq.units
    B
    18 sq. units
    C
    27 sq. units
    D
    81 sq.units

  • The area of the quadrilateral ABCD where A (0,4,1) , B(2,3,-1), c (4,5,0)and D(2,6,2) is to :

    A
    9 sq units
    B
    18 sq units
    C
    27 sq units
    D
    81 sq units

  • The area of quadrilateral ABCD with A(1,1),B(7,-3) , C(12,2) and D(7,21) as its vertices is

    A
    35 sq. units
    B
    65 sq. units
    C
    132 sq. units
    D
    115 sq. units

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    Find the area of quadrilateral ABCD whose vertices are A(-3, -1), B(-2, -4), C(4, -1) and D(3, 4).

    Find the area of the quadrilateral ABCD whose vertices are A(1,0),B(5,3),C(2,7) and D(-2,4)

    If the three vertices of a parallelogram ABCD are A(3, -1, 5), B(1, -2, -4) and C(0, 3, 0), then the coordinates of fourth vertex is

    The co-ordinates of three vertices of a parallelogram ABCD are A(1,0) , B(3,4) and C(1,2) . The co-ordinates of fourth vertex D are :

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