Show that the points (-4, -7), (-1, 2), (8, 5) and (5, -4) taken in order are the vertices of a rhombus.

The points (7, 8), (1, 6), (-1, 0), (5, 2) taken in order, form

Show that the points A(7 , 3) , B (6 , 1) , C ( 8 , 2) and D ( 9 , 4) taken in that order are vertices of a parallelogram . (AS_(2))

Prove that the points ( - 7 , - 3) , ( 5 , 10) , ( 15 , 8) and ( 3 , - 5) taken in order are the corners of a parallelogram . (AS_(2))

The points (2, 5), (0, 3), (2, 1), (4, 3) taken in order, form

The points (7, 1), (4, 4), (-2,-2), (1, -5) taken in order, form

Four points A(+1, -1, 1) , B(1, 3, 1), C(4, 3, 1), and D(4, -1, 1), taken in order are the vertices of

Show that the points A = ( 4 , 2) , B ( 7 , 5) and C ( 9 , 7) are collinear.

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 A(-1, -2), B(4, 3), C(2, 5) and D(- 3, 0) in that order form a rectangle.