Example image of eyePlorer eyePlorer map for 'Point at infinity': Curve Extended real number line Number line Point (geometry) Real projective line Complex plane Riemann sphere Sphere Topological space Alexandroff extension Line at infinity Parallel (geometry) Projective plane Hyperbolic geometry Beltrami–Klein model Poincaré disk model Exterior angle theorem Pasch's axiom External ray Center of curvature Filled Julia set Generalised circle Möbius transformation Elliptic curve Rational normal curve Circular points at infinity Differential of the first kind Monge's theorem Wess–Zumino–Witten model Twisted cubic Regular singular point Schoof's algorithm Hyperplane at infinity Local zeta-function Projective line Dupin cyclide Elliptic curve cryptography Inversive geometry Schwarz–Christoffel mapping Cubic plane curve Entire function Hilbert's twenty-first problem Regular function Plücker coordinates Imaginary hyperelliptic curve Lie sphere geometry Conformal map Periodic points of complex quadratic mappings Improper Omega point (disambiguation)