`D(2,1,0) ,E(2,0,0),F(0,1,0) ` are midpoints of the sides BC,CA,AB of `DeltaABC` respectively . The , the centroid of `DeltaABc` is

D(2,1,0) E(2,0,0) F(0,1,0) are mid points of the sides BC,CA,AB of Delta ABC respectively. The centroid of Delta ABC is ……..

If D(2,1,0) ,E(2,0,0) and F(0,1,0) are mid points of the sides BC,CA and AB of triangle ABC respectively, then the centroid of triangle ABC is

If (2, 1), (-1, -2), (3, 3) are midpoints of sides BC, CA, AB of DeltaABC , then the equation of AB is

D,E,F are midpoints of sides BC,CA,AB of DeltaABC . Find the ratio of areas of DeltaDEF and DeltaABC .

If E, F and G are the mid-points of the sides AB, BC and CA of the DeltaABC respectively, then prove that the centres of gravity of DeltaABC and DeltaEFG are the same point.

If (1, 2), (4, 3), (6, 4) are the midpoints of the sides bar(BC), bar(CA), bar(AB) of DeltaABC , then the equation of AB is

If (2, 1), (-1, -2), (3, -3) are the mid points of the sides BC, CA, AB respectively of DeltaABC , then the equation of the perpendicular bisector of AB is ax+by+c=0 , then (a+b+c) is _______.