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

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

Prove that the points (2, -1), (4, 1), (2, 3) and (0, 1) are the vertices of a square.

Prove that the points (2, -1), (4, 1), (2, 3) and (0, 1) are the vertices of a square.

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

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

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

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

Show that the points A(3,3,3,),B(0,6,3),C(1,7,7) and D(4,4,7) are the vertices of a square.

Show that the points A(3, 0), B(4, 5), C(-1, 4) and D(-2, -1) are the vertices of a rhombus. Find its area.