Show that the points (5,-1,1),(7,-4,7),(1,-6,10) and (-1,-3,4) are the vertices of a rhombus.

Show that the points (1, 7), (4, 2), (-1,-1) and (-4, 4) are the vertices of a square.

Show that the points (-1,2,1), (1,-2,5), (4,-7,8) and (2,-3,4) are vertices of a parallelogram.

Show that the points (3, -1, -1), (5,-4, 0), (2, 3, -2) and ( 0, 6, -3) are the vertices of a parallelogram*.

Show that the points : (0,4,1),(2,3,-1),(4,5,0) and (2,6,2) are vertices of square.

The points (5, -5, 2), (4, -3, 1), (7, -6, 4) and (8, -7, 5) are the vertices of

Show that the points : A (7, 3), B (3, 0), C (0, -4) and D (4, - 1) are the vertices of rhombus ABCD.

Show that the points (1, 2, 3), (-1, -2, -1), (2, 3, 2) and (4, 7, 6) are the vertices of a parallelogram.

Show that the points (2,4,3),(4,1,9) and (10,-1,6) are the vertices of an isosceles right angled triangle.

Show that the points (0,-1,-1) , (-4,4,4) , (4,5,1) and (3,9,4) are coplanar.

Show that the points : (4, 7, 8), (2, 3, 4), (- 1, - 2, 1), (1, 2, 5) are the vertices of a parallelogram.