Invariable Point

Three concurrent homologous lines pass respectively through three fixed points on the similitude circle which are known as the invariable points.

See also

Homologous Points, Similitude Circle

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

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Invariable Point

Cite this as:

Weisstein, Eric W. "Invariable Point." From MathWorld--A Wolfram Web Resource.

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