Find the centroid of the triangle whose angular points are (3,-5),(-7,4) and (10,-2).

Find the coordinates of the centroid of the triangle whose vertex are (1,-2),(3,2)and (-1,0).

Find the circumcentre of the triangle whose vertices are (-2, -3), (-1, 0) and (7, -6). Also find the radius of the circumircle.

Find the area of the triangle whose vertices are : A(1,2,3), B(2,-1,4) and C(4,5,-1)

Find the coordinates of incentre of the triangle whose are (4, -2), (-2, 4) and (5, 5).

Find the area of the triangle whose vertices are (3, 8), (– 4, 2) and (5, 1).

Find the co-ordinates of the circumcentre of the triangle whose vertices are : (1, 2) , (3, - 4) and (5,-6).

Find the coordinates of the orthocentre of the triangle whose vertices are (1, 2), (2, 3) and (4, 3).

Find the angles of the triangle whose vertices are (0,-1,-2), B(3,1,4) and C(5,7,1).