| 释义 |
Examples:descriptive Geometry (three-dimensional geometry using projections and elevations)—Lobachevsky's non-Euclidean geometry—great circle (in spherical geometry)—quadric surface (geometry)—coordinate system (geometry)—Felix Klein's Erlangen program (1872) on geometry and group theory—conic section (geometry)—Nikolai Ivanovich Lobachevsky (1793-1856), one of the discoverers of non-Euclidean geometry—quadrant (in coordinate geometry)—(math.) Riemannian geometry—quadratic curve (geometry)—intrinsic coordinates (geometry)—the quotient of differences (slope of a line in coordinate geometry)—regular (figure in geometry)—János Bolyai (1802-1860), one of the discoverers of non-Euclidean geometry— |