The equation of the sides of a triangle, the coordinates of whose angular points are: `(3,5),(1,2)` and `(-7,4)`.

Find the equations to the sides of the triangles of the coordinates of whose angular points are respectively: (1,4), (2, -3) and (-1, -2).

Find the equations to the sides of the triangles of the coordinates of whose angular points are respectively: (1,4),(2,-3) and (-1,-2) .

Find the orthocentre of the triangle ABC whose angular points are A(1,2),B(2,3) and C(4,3)

Find the coordinates of the centroid of a triangle the mid points of whose sides are (1,2,-3), (3,0,1) and (-1,1,-4)

Find the coordinates of the vertices of a triangle whose sides have mid points at (2,1), (-1,3) and (-2,5).

Find the coordinates of the centre of the circle inscribed in a triangle whose angular points are (-36,7),(20,7) and (0,-8)

If (-3, 2), (1, -2) and (5, 6) are the mid-points of the sides of a triangle, find the coordinates of the vertices of the triangle.