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

Prove that the points (6, 8), (3, 7), (-2, -2), (1, -1) are the vertices of a parallelogram.

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

Using the slope of line, show that the points (-1,-2) , (0,4) , (3,3) and (2,-3) are the vertices of a parallelogram.

By using the concept of slope, show that the points (-2,-1), (4,0), (3,3) and (-3,2) are the vertices of a parallelogram.

Show that the points (-2,4,1),(-1,5,5),(2,2,5) and (1,1,1) are the vertices of a square.

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

Without using the distance formula, show that the points A (4, 5), B (1, 2), C (4, 3) and D (7, 6) are the vertices of a parallelogram.

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 (2,3,4),(-1,-2,1),(5,8,7) are collinear.

Show that the points (2,3,4),(-1,-2,1),(5,8,7) are collinear.