Given `A (1, -1, 0); B(3,1,2); C(2, -2, 4)` and `D(-1, 1, -1)` which of the following points neither lie on AB nor on CD?

If points A (2, 4, 0), B(3, 1, 8), C(3, 1, -3), D(7, -3, 4) are four points then projection of line segment AB on line CD.

If points A (2, 4, 0), B(3, 1, 8), C(3, 1, -3), D(7, -3, 4) are four points then projection of line segment AB on line CD.

If the point A(3, -2, 4), B(1, 1, 1) and C(-1, 4, -2) are collinear then (C:AB)=

If A = (1,-1,0), B=(1,2,1), C=(2,3,0) and D=(0,1,t). Be four points. If the projection of bar(AB) " on " bar(CD)" is equal to that of " bar(CD) " on " bar(AB) , then find t.

Show that the points A(0,4,3) , B(-1,-5,-3), C(-2,-2,1) and D(1,1,1) are coplanar. Also find the equation of the plane in which these points lie.

Show that the points A(0,4,3) , B(-1,-5,-3), C(-2,-2,1) and D(1,1,1) are coplanar. Also find the equation of the plane in which these points lie.

If A (1,2,3), B (-1,2, -3), C (1 , -2, 3) and D (-1, -2, -3) are points in space, then find the angle between the directed lines vec(AB) and vec(CD).