Show that the four points (6,-7,0),(16,-19,-4),(0,3,-6),(2,-5,10) lie on a same plane.

Show that the four points (1,0), (2,-7), (8,1) and (9,-6) are concyclic.

Show that the points (-3,0), (1,2), (5,-6) and (1,-8) taken in order to form a rectangle.

Find the point of intersection of AB and A( 6,-7,0),B(16,-19,-4,) , C(0,3,-6) and D(2,-5,10).

Show that the points A(1,2,7), B(2,6,3) and C(3, 10, -1) are collinear.

Show that the three points ( 4,2),(7,5) and (9,7) lie on a straight line .

Show that the points (4,-3,1)(2,-4,5) and (1,-1,0) form a right angled triangle.

Show that the line through the points (1,-1,2) ,(3,4,-2) is perpendicular to the line through the points (0,3,2) and (3,5,6).

Where do these following points lie (0, -3), (0, -8), (0, 6) and (0, 4) on coordinate plane?

Plot the following point (-3, 3), (2, 3), (-6, -1) and (5, -1) in the cartesian plane, where do they lie?

Show that the points A (4, 2), B (7, 5) and C (9, 7) are three points lying on a same line.