Show that the points (1,2,3),(2,3,1) and (3,1,2) from an equilateral triangle.

Show that the points (1,2,3), (2,3,1) and (3,1,2) form an equilateral triangle.

Show that the points (1, 2, 3), (2, 3, 1) and (3, 2, 1) form an equilateral triangle.

The points (1,2,3 ), (2,3,1 ), (3,1,2 ) from

Show that the points (2,4),(2,6) (2+sqrt3,5) form an equilateral triangle.

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

Show that the points (-1,0,7),(3,2,1) and (5,3,-2) are collinear.

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

Show that the points A=(1,2,3),B=(7,0,1), C=(-2,3,4) are colinear.

I : The points (-2,3,5 ), (1,,2,3 ),(7,0,-1 ) are collinear. II: The points (2 ,-1,1 ) (1-3-5 ), (3,-4,-4 ) form an equilateral triangle.

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