(i) The median from A meets BC at D. Find the coordinates of the point D.

(ii) Find the coordinates of the point P on AD such that AP : PD = 2 : 1

(iii) Find the coordinates of points Q and R on medians BE and CF respectively such

that BQ : QE = 2 : 1 and CR : RF = 2 : 1.

(iv) What do yo observe?

[Note : The point which is common to all the three medians is called the centroid

and this point divides each median in the ratio 2 : 1.]

(v) If A(x1, y1), B(x2, y2) and C(x3, y3) are the vertices of ▲ABC, find the coordinates of the centroid of the triangle.