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Confocal Conics

Confocal conics are Conic Sections sharing a common Focus. Any two confocal Central Conics are orthogonal (Ogilvy 1990, p. 77).

See also Conic Section, Focus


References

Ogilvy, C. S. Excursions in Geometry. New York: Dover, pp. 77-78, 1990.




© 1996-9 Eric W. Weisstein
1999-05-26