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Sondat's Theorem

The Perspective Axis bisects the line joining the two Orthocenters.

See also Orthocenter, Perspective Axis


Johnson, R. A. Modern Geometry: An Elementary Treatise on the Geometry of the Triangle and the Circle. Boston, MA: Houghton Mifflin, p. 259, 1929.

© 1996-9 Eric W. Weisstein