` D(-1,8),E(4,-2),F(-5,-3)` are midpoints of sides BC,CA and AB of ` triangle ABC` .Find equation of sides of ` triangleABC`

Answer

` 2x + y + 13 =0. x - 9y + 73 = 0, 11 x - 4y - 52 =0 ((-1)/(9) , (-10)/(19))`