Example image of eyePlorer eyePlorer map for 'Plane (geometry)': Mathematics Surface Euclidean geometry Geometry Trigonometry Graph of a function Graph theory Euclid Axiom Cartesian coordinate system Cartesian product Perpendicular Surface normal If and only if Euclidean vector Cramer's rule Determinant Cross product Basis (linear algebra) Orthonormality Dihedral angle Abstraction (mathematics) Isometry Isomorphism Category (mathematics) Homotopy Metric (mathematics) Topology Low-dimensional topology Bijection Continuous function Four color theorem Planar graph Affine space Collinearity Differential geometry Differential structure Manifold Derivative Smooth function Complex analysis Complex plane Complex conjugate Complex manifold Conformal map Curvature Spherical geometry Stereographic projection Hyperbolic geometry Special relativity