Medians of a Triangle
A median of a triangle is a line segment drawn from a vertex to the midpoint of the opposite side of the vertex.
The medians of a triangle are concurrent at a point. The point of concurrency is called the centroid.
In the figure shown, units, units, and units. If is a median of the triangle, find the length of .
The fact that is a median tells us that must be a midpoint of . So, to find , all we need to do is divide by .
Note that this problem gives us a couple of pieces of irrelevant information. We don't need to know the values of and .