If the middle points of the sides BC, CA, and AB of triangle ABC are (1,3), (5,7), and (-5,7), respectively, the find the equation of the side AB.

If the middle points of the sides B C ,C A , and A B of triangle A B C are (1,3),(5,7), and (-5,7), respectively, then find the equation of the side A Bdot

The cordinates of the mid points of the sides BC, CA and AB of the triangle ABC are (5,2,8), (2,-2,-3) and (2,-3,4) , find the coordinates of the centroid of the triangle.

The equations of the perpendicular bisectors of the sides AB and AC of a triangle ABC are x -y+5=0 and x+2y=0 respectively . If the point A is (1,-2) , find the equation of the line BC.

If the middle points of the sides of a triangle are (-2,3),(4,-3),a n d(4,5) , then find the centroid of the triangle.

If D,E and F are the middle points of the sides BC,CA and AB of the DeltaABC , then AD+BE+CF is

The equations of the sides BC , CA and AB of the DeltaABC are 2x+y+1=0,2x+3y+1=0 and3x+4y+3=0 respectively. Find the equation of the perpendicular drawn from A on the side BC.

The altitudes from the angular points A,B, and C on the opposite sides BC, CA and AB of DeltaABC are 210, 195 and 182 respectively. Then the value of a is ____

If the lengths of the sides vec(BC), vec(CA) and vec(AB) of the triangle ABC be a:b:c respectively and the lengths of perpendicular from the circumcenter upon vec(BC), vec(CA) and vec(AB) be x, y, z respectively, then prove that, a/x + b/y + c/z = (abc)/(4xyz) .

In triangle A B C , the equation of the right bisectors of the sides A B and A C are x+y=0 and y-x=0 , respectively. If A-=(5,7) , then find the equation of side B Cdot