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

Prove that the points A(-5 , 1 , 1) , B(1 , 3 , 4) , C ( - 1 , 6 , 10) and D (-7 , 4, 7) taken in order are the vertices of a rhombus .

Prove that the points ( 4 , 7 , 6) , ( 2 , 3 , 2 ) , ( - 1, -2, -1) and ( 1, 2 , 3) taken in order are the vertices of a parallelogram . Is the the parallelogram a rectangle?

Prove that points (-3, -1), (2, -1), (1, 1) and (-2, 1) taken in order are the vertices of a trapezium.

Prove that points (-3, -1), (2, -1), (1, 1) and (-2, 1) taken in order are the vertices of a trapezium.

The points (-3,4),(-1,0),(1,0) and (3,4) taken in order are the vertices of a

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))

The point A(1,2), B(2,-3), C(-1,-5) and D(-2, 4) in order are the vertices of

Points A(4, 5, 1), B (0, - 1, - 1), C (3 , 9, 4) and D( -4, 4, 4) are

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.