Centroid of a triangle
The centroid of a triangle is created by the point of concurrency of triangle's medians
 this centroid of a triangle will mark a point of concurrency of the triangle's medians that cuts each of the medians into two segments that have a 2:1 relationship
 also known as the "center of gravity"
Link to www.mathopenref.com 
This is a link to a website that allows you to investigate the properties related to a triangle and its medians
