The point of intersection of the medians of a triangle. Also, the point in a figure or solid which is the balance point, or center of gravity, of the figure or solid.
Centroid of a triangle at Mathforum.org
: Explore the centroid of a triangle dynamically.
Centroid Technique at Thinkquest.org
: Read about the centroid of a polygon and how you can use it to make a testellation.
: Read more about the centroid and its related properties in a triangle.