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 Related Terms
 Centroid:  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.
Point of Intersection: The point at which two or more lines intersect (cross).
Median of a Triangle: A segment is a median of a triangle if and only if its endpoints are a vertex of the triangle and the midpoint of the side opposite the vertex.
Triangle: A polygon with three sides.
Solid: A figure that has length, width, and thickness (i.e., a figure that is 3-dimensional).
Incenter: The center of a circle inscribed in a given triangle. Also, the point of intersection of the angle bisectors of a triangle.
Orthocenter: The point of intersection of the altitudes of a triangle.
Circumcenter: The point of intersection of the perpendicular bisectors of the sides of a given triangle; the center of the circle circumscribed about a given triangle.