Line (geometry): Euclidean geometry, Curvature, Curve

Parabolic Geometry: Euclidean Geometry, Scalar Curvature, Subgroup

Elliptic Geometry: Non Euclidean Geometry, Line (mathematics), Point (geometry), Parallel (geometry)

Curve: Mathematics, Line (geometry), Euclidean Space, List of Curves

Euler's Theorem (differential geometry): Mathematics, Differential Geometry, Curvature, Curve