Three vertices of a rhombus taken in order are (2,-1),(3,4) and (-2,3). Find the fourth vertex.

If three consecutive vertices of a parallelogram are (3,4,-1),(7,10,-3) and (8,1,0), find the fourth vertex.

Two vertices of an equilateral triangle are (0, 0) and (0,2 sqrt3) . Find the third vertex.

The vertices of a triangle are (4, -3), (-2, 1) and (2, 3). Find the co-ordinates of the circumcentre of the triangle. [Circumcentre is the point of concurrence of the right-bisectors of the sides of a triangle.]

If three verticles of a rectangle are (0,0), (2, 0), and (0, 3), find the coordinates of the fourth vertex?

The vertices of a triangle are A (-2, 1), B (6, -2) and C (4, 3). Find the lengths of the altitudes of the triangle.

The vertices of a triangle PQR are P(2, 1), Q (-2,3) and R (4, 5). Find the equation of the median through the vertex R.

The two opposite vertices of a square are (-1, 2) and (3, 2). Find the coordinates of other two vertices.

Three vertices of parallelogram ABCD are A(3,-1,2), B(1,2,-4), C(-1,1,2). Find the co-ordinate of the fourth vertex.