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 Related Terms
 Orthocenter:  The point of intersection of the altitudes of a triangle.
Altitude of a Triangle: The perpendicular distance between a vertex of a triangle and the side opposite that vertex. Sometimes called the height of a triangle. Also, sometimes the line segment itself is referred to as the altitude.
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.
Incenter: The center of a circle inscribed in a given triangle. Also, the point of intersection of the angle bisectors 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.