This site is supported by donations to The OEIS Foundation.
Euclidean geometry
From OeisWiki
(Redirected from Parabolic geometry)
Euclidean geometry, named after Euclid, is also called parabolic geometry.
Euclidean geometry has the properties
- null curvature;
- the parallel postulate is true (in two dimensions, there is one and only one line through a point not on line which do not intersect );
- the sum of angles of a triangle is 180 degrees.
See also
- Hyperbolic geometry (Lobachevskian geometry, with negative curvature)
- Parabolic geometry (Euclidean geometry, with null curvature)
- Elliptic geometry (Riemannian geometry, with positive curvature)