The diagonals of a parallelogram meet in the point (1,-2,3) and the ends of a side are (0,0,0) and (2,4,-3). Find the remaining two vertices of the parallelogram.

The ends of a side of a parallelogram are (2,5,-3),(3,7,-5) and its diagonals meet in (4,3,3). Find the remaining vertices of the parallelogram.

The mid-points of the sides of a triangle are (5,7,11),(0,8,5) and (2,3,-1). Find the coordinates of the vertices of the triangle.

The mid-points of the sides of a triangle are (1, 5, -1),(0,4,-2) and (2, 3, 4). Find its vertices.

If the coordinates of the mid-points of the sides of a triangle are (1,\ 1),\ (2,\ -3) and (3,\ 4) , find the vertices of the triangle.

ABCD is a parallelogram. If the points A , B and C are respectively : (0,0), (2,2),(1,3) Find the coordinates of the point D.

Show that the points (1, 2, 3), (-1, -2, -1), (2, 3, 2) and (4, 7, 6) are the vertices of a parallelogram.

Find the area of the triangle formed by joining the mid-points of the sides of the triangle whose vertices are (0, -1), (2, 1) and (0, 3). Find the ratio of the area of the triangle formed to the area of the given triangle

Show that the points (3, -1, -1), (5,-4, 0), (2, 3, -2) and ( 0, 6, -3) are the vertices of a parallelogram*.

Show that the points (-1,2,1), (1,-2,5), (4,-7,8) and (2,-3,4) are vertices of a parallelogram.