Verify the following :
(0, 7, -10), (1, 6, -6) and (4, 9, -6) are the vertices of an isosceles triangle.

Verify the following : (0, 7, 10), (-1, 6, 6) and (-4, 9, 6) are the vertices of a right angled triangle.

Check whether (5, -2), (6, 4) and (7, -2) are the vertices of an isosceles triangle.

Check whether (5,-2), (6,4) and (7,-2) are the vertices of an isosceles triangle.

Verify the following : (-1, 2, 1), (1, -2, 5), (4, -7, 8) and (2, -3, 4) are the vertices of a parallelogram.

Show that the points (7,10), (-2, 5) and (3,-4) are the vertices of an isosceles right triangle

Show that the points (3, 4), (8, -6) and (13, 9) are the vertices of a right angled triangle.

Show that the points (1, 2, 3), (-1, -2, -1), (2, 3, 2) and (4, 7, 6) are the vertices of a parallelogram.

If the points A(-2, k), B(3,-4) and C(7,10) are the vertices of a right angled isosceles triangle right angled at A, find the value of k and the area of Delta ABC .

Prove that the points (0, -1), (6, 7), (-2, 3) and (8, 3) are the vertices of a rectangle.

Are the points A(3, 6, 9), Q(10, 20, 30) and C(25, -41, 5), the vertices of a right angled triangle ?