The points `A(2,0),\ B(9,1),\ C(11 ,6)a n d\ D(4,4)` are the vertices of a quadrilateral `A B C Ddot` Determine whether ABCD is a rhombus or not.

The points A(2,\ 0),\ \ B(9,\ 1),\ \ C(11 ,\ 6) and D(4,\ 4) are the vertices of a quadrilateral A B C D . Determine whether A B C D is a rhombus or not.

The points A(2,0),B(9,1),C(11,6) and D(4,4) are the vertices of a quadrilateral ABCD Determine whether ABCD is a rhombus or not.

The points A(2,0),quad B(9,1),C(11,6) and D(4,4) are the vertices of a quadrilateral ABCD. Determine whether ABCD is a rhombus or not.

Show that the points A(3, 1), B(0, -2), C(1, 1) and D(4, 4) are the vertices of a parallelogram ABCD.

Show that the points A(1,3),B(2,6),C(5,7) and D(4,4) are the vertices of a rhombus .

Prove that the points A(0,1), B(1,4), C(4,3) and D(3,0) are the vertices of a square ABCD.

Show that the points A(3,5),B(6,0), C(1,-3) and D(-2,2) are the vertices of a square ABCD.

Show that the points A(3, 5), B(6, 0), C(1, -3) and D(-2, 2) are the vertices of a square ABCD.

If A(-5, 7), B(-4, -5) , C(-1, -6) and D(4,5) are the vertices of a quadrilateral, find the area of the quadrilateral ABCD