If `A ,B ,C` have position vectors `(2,0,0),(0,1,0),(0,0,2),` show that ` A B C ` is isosceles.

If A,B,C have position vectors (2,0,0),(0,1,0),(0,0,2), show that ABC is isosceles.

If A, B, C have position vectors (2, 0, 0), (0, 1, 0) and (0, 0, 2). Show that DeltaABC is isosceles.

If A;B;C have position vectors (2;0;0);(0;1;0);(0;0;2) show that triangle ABC is isosceles.

If A ,\ B ,\ C have position vectors (0, 1, 1), (3, 1, 5), (0, 3, 3) respectively, show that "Delta"A B C is right angled at Cdot

If the vertices A,B,C of a triangle ABC have position vectors (1,2,3),(-1,0,0)(0,1,2) respectively then find angle ABC (angle ABC is the angle between the factors BA and BC).

If the vertices A,B,C of triangle ABC have position vectors (1,2,3), (-1,0,0),(0,1,2) respectively what is the magnitude of the angle ABC?

The value of |(a, 0,0),(0,b,0),(0,0,c)|^(2) is …………………

Show that the points A(2,1,-1),B(0,-1,0),C(4,0,4) and (2,0,1) are coplanar.