he co-ordinates of the centroid of a triangle PQR are (2, -5). If Q = (-6, 5) and R = (11, 8), calculate the co-ordinates of vertex P.

Calculate the co-ordinates of the centroid of the triangle ABC, if A = (7, -2), B = (0, 1) and C = (-1, 4).

The co-ordinates of three consecutive vertices of a parallelogram are (2, 0) , (4, 1) and (6, 4). Find the co-ordinates of its 4th vertex.

Find the co-ordinates of the circumcentre of a triangle whose vertices are (7,5) , (6,6) and (-2,2) .

The co-ordinates of three consecutive vertices of a parallelogram are (-1,0), (3, 1) and (2, 2). Find the co-ordinates of fourth vertex of the parallelogram.

The co-ordinates of three vertices of a parallelogram ABCD are A(1,0) , B(3,4) and C(1,2) . The co-ordinates of fourth vertex D are :

Find the co-ordinates of the centroid of a triangle ABC whose vertices are : A(-1, 3), B(1, -1) and C(5, 1)

The co-ordinates of the vertices of a parallelogram ABCD are A(-1,2,3), B(2, -4,1) and C(1,2,-1). Find the co-ordinates of its 4th vertex.

The co-ordinates of the end points of a diameter are (-1, 5) and (3, -1). Find the co-ordinates of the centre and the radius of circle.

The co-ordinates of the end points of a diameter of a circle are (3, -2) and (-3, 6). Find the co-ordinates of the centre and radius.

The co-ordinates of two vertices of Delta ABC are A(3,2,-4) and B(-2,3,-1). If its centroid is (3,1,0), then find the co-ordinates of vertex C.