Direct Isometries of the Hyperbolic Plane

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Create some points, lines, triangles, and circles in the Poincaré disk model for the hyperbolic plane. Choose parameters and to map them by the direct (or orientation-preserving) isometry .

Contributed by: Gasper Zadnik (April 2013)
Open content licensed under CC BY-NC-SA



Of the two possible horocycles, the one that looks smaller is used.

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