The points (1, 1), (- 6, 0), (-2, 2). (-2,-8) are

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

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

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

Verify that the points (3,-2,4),(1,0,-2) and (-1,2,-8) are collinear

Verify that the points (3, - 2, 4), (1, 0, - 2) and (-1,2, - 8) are collinear.

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.

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

Find the area of the triangle with vertices at the points: (i) (-1, -8), (-2, -3) and (3, 2) (ii) (0, 0), (6, 0) and (4, 3)

The coplanar points (3,2,1 ), (5,6,5),(2,1,2 )(0,-3,-2 ) from a