Medians of a Triangle and Centroid
    Medians :-

AB, BC, CA are the sides of  and AD is a line segment which intersects side BC of  at point D such that AD bisects the side BC. This line segment AD is called the median of .
A median is a line segment which connects a vertex of a triangle to the mid point of the opposite side.

Centroid :-

•    Centroid is the point of intersection of all three medians of a triangle.
•    In the given figure G is the centroid of 
•    A centroid of a triangle cuts the median in the ratio 2 : 1
            AG : GD = 2 : 1