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The point at which the altitudes of a triangle intersect.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



the point of intersection of the three altitudes of a triangle. In any triangle the point of intersection of the medians, the center of a circumscribed circle, and the orthocenter all lie on one line.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.