: Mathématiques: ideal triangle

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ideal triangle

In hyperbolic geometry an ideal triangle is a hyperbolic triangle whose three vertices all are ideal points. Ideal triangles are also sometimes called triply asymptotic triangles or trebly asymptotic triangles. The vertices are sometimes called ideal vertices. All ideal triangles are congruent.
(Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Ideal_triangle)

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