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Triangle Transformation Principle

The triangle transformation principle gives rules for transforming equations involving an Incircle to equations about Excircles.

See also Excircle, Incircle


Johnson, R. A. Modern Geometry: An Elementary Treatise on the Geometry of the Triangle and the Circle. Boston, MA: Houghton Mifflin, pp. 191-192, 1929.

© 1996-9 Eric W. Weisstein