How do you find the center of mass of a triangle?

The center of mass of a triangle that is made of a material
which has a uniform mass is located at its centroid.

The centroid of
a triangle is the point of intersection of its medians. It can be found by drawing straight lines
from each vertex to the mid-point of the opposite side. These are called the
medians.

The three medians of any triangle intersect at a common
point which divides each of them in the ratio 2: 1

The
center of mass of a triangle lies at its centroid which is the point of intersection of the
medians.