[" 3.If "(3,2,-1),(4,1,1)" and "(6,2,5)" are three vertices and "(4,2,2)" is the centroid of a "],[" tetrahedron Find the rourth vertex."]

If (3, 2, -1) (4, 1,-1) and (6,2,5) are three vertices and (4, 2, 2) is the centroid of a tetrahedron, then find the fourth vertex.

If (3,2,-1),(4,1,1) and (6,2,5) are three vertices and (4,2,2) is the centroid of a tetrahedro, find the fourth vertex to that tetrahedron.

If A (1,2,3) ,B(4,3,2) and C (5,2,7) are three vertices of a tetrahedron for which the centroid is (4,5//2,5) , the fourth vertex is

A(1,1,3) , B(4,3,2) and C(5 ,2, 7) are three vertices of a tetrahedron for which the centroid is (4 , 5/2 , 5) the fourth vertex is

A(1, - 1, 2) B(1, 0, 2) C(2, -2, 3) and D(4, 2, 1) are the vertices of a tetrahedron then find the distance of the plane ABC from the vertex D.

A=(1,-1,2),G=(3,1,1) are one vertex and centroid of tetrahedron ABCD and G_(1) is the centroid of /_BCD then AG_(1)=

(2, 1), (5, 4) and (1, 4) are three vertices of a parallelgram. Find the coordinates of the vertex opposite to (2, 1).