Example image of eyePlorer eyePlorer map for 'Hyperbolic geometry': Euclidean geometry János Bolyai Mathematics Nikolai Lobachevsky Non-Euclidean geometry Parallel postulate Angle Ideal triangle Ultraparallel theorem Angle of parallelism Gaussian curvature Adrien-Marie Legendre Alfonso Alhazen Gersonides Giovanni Girolamo Saccheri John Wallis Lambert Nasir al-Din al-Tusi Omar Khayyám Proclus Witelo Lambert quadrilateral Quadrilateral Saccheri quadrilateral Hyperbolic function Hyperbolic triangle Johann Heinrich Lambert Carl Friedrich Gauss Eugenio Beltrami Felix Klein Harold Scott MacDonald Coxeter John Milnor Beltrami–Klein model Hyperboloid model Mathematical model Poincaré disk model Poincaré half-plane model Hyperbolic space Chord (geometry) Plane (geometry) Arthur Cayley Cross-ratio Projective geometry Orthogonality Conformal map Möbius transformation Hyperboloid Minkowski space Karl Weierstrass
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