"Inversion in a Circle" and "Inversion of Lines and Circles | See in particular the bottom of p |
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A Distorted View of Geometry |
"Circles: A Mathematical View, rev.
Siehe Gericke: Antike und Orient | "The Evolution of the Isoperimetric Problem" |
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; Askey, Richard; Roy, Ranjan 1999 | 1914 , page 193 via• Proceedings of the Royal Irish Academy |
Dragutin Svrtan and Darko Veljan, "Non-Euclidean versions of some classical triangle inequalities", Forum Geometricorum 12 2012 , 197—209 | Springer, Berlin, Heidelberg, New York, |
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Altshiller-Court, Nathan, College Geometry, Dover, 2007 orig | "On the Equations and Properties: 1 of the System of Circles Touching Three Circles in a Plane; 2 of the System of Spheres Touching Four Spheres in Space; 3 of the System of Circles Touching Three Circles on a Sphere; 4 of the System of Conics Inscribed to a Conic, and Touching Three Inscribed Conics in a Plane" |
The Associated Harmonic Quadrilateral, Paris Pamfilos, Forum Geometricorum, Volume 14 2014 15—29.
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