`A(0,5,6),B(1,4,7),C(2,3,7) and D(3,4,6)` are four points in space. The point nearest to the origin `O(0,0,0)` is (A) A (B) B (C) C (D) D

P(0, 5, 6), Q(1, 4, 7), R(2, 3, 7) and S(3, 4, 6) are four points in the space. The point nearest to be origin O(0, 0, 0) is

If A (6,-6,0), B(-1,-7,6), C (3,-4, 4) and D (2,-9,2) be four points in space. Show that AB is perpendicular to CD.

If A(1,2,3),B(4,5,7) ,C(-4,3,-6) and D(2,9,2) are four given points then find the angle between the lines AB and CD. a) (pi)/(6) b) (pi)/(4) c) (pi)/(3) d) 0

Let (1,2,0) , B(2,0,4) , C (1,1,2) & D(0,1,3) be four points in space then the length of projection of line segment AB on the line C D is

Show that the points A(6,-7,0),B(16,-19,-4),C(0,3,-6) and D(2,-5,10) are such that AB and CD interesect at the point P(1,-1,2) .

Show that A(4,-1), B(6,0), C(7,-2) and D(5,-3) are vertices of a square.

Show that A(4,-1), B(6,0), C(7,-2) and D(5, -3) are vertices of a square.

Given A=(0,6),B=(4,0),C=(-3,0),D=(0,-2) concylic points, the orthocentre of triangleABC" is"

Show that the points A(6,-7,0),B(16 ,-19 ,-4),C(0,3,-6) and D(2,-5,10) are such that AB and CD intersect at the point P(1,-1,2) .