Prove that the triangle formed by joining the three points whose coordinates ere `(1,2,3),(2,3,1)a n d(3,1,2)` is an equilateral triangle.

Prove that the triangle formed by joining the three points whose coordinates ere (1,2,3),(2,3,1) and (3,1,2) is an equilateral triangle.

Prove that the triangle formed by joining the three points whose co-ordinates are (1,2,3) (2,3,1) & (3,1,2) respectively is an equilateral triangle.

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 (3,1,2) from an equilateral triangle.

Prove that the points A (1,2,3), B(2,3,1) and C(3,1,2) are the vertices of an equilateral triangle.

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

Find the areas of the triangle formed by the points whose coordinates are given below:(ii)(1,2),(2,-3),(-3,-4)

Show that the points (1,-2,-3),(2,-3,-1) and (3,-1,-2) are the vertices of an equilateral triangle

For what value of alpha ,the points (1,2,3),(2,3,1) and (3,1,alpha) form an equilateral triangle?