There are actually tens of thousands of well defined triangle centers.

The centroid is always a safe and fast center, which is simply the sum of the 3 points which define the triangle, divided by 3.

There are actually tens of thousands of well defined triangle centers.

The centroid is always a safe and fast center, which is simply the sum of the 3 points which define the triangle, divided by 3 (or multiplied by 1/3rd, which is the faster operation)