If vertices of any quadrilateral are (0, -1), (2,1), (0, 3) and (- 2,1), then it is a
Parallelogram
Square
Rectangle
Collinear
Let A(0, -1), B(2, 1), C(0, 3) and D(-2, 1).
Obviously AB = BC = CD = AD = 2√2
Also, AC = BD = 4 and slope of line AB = 1,
If vertices of a quadrilateral are A (0,0), B(3,4), C(7,7) and D(4,3) then quadrilateral ABCD is
A (4,7,8) B (2,3,4) , C (-1,-2,1) and D (1,2,5) are vertices of a quadrilateral. The quadrilateral is a