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Euclidean geometry
From OeisWiki
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)