intersecting planes

См. также в других словарях:

• Dehn planes — In geometry, Dehn constructed two examples of planes, a semi Euclidean geometry and a non Legendrian geometry, that have infinitely many lines parallel to a given one that pass through a given point, but where the sum of the angles of a triangle… …   Wikipedia

• Plane (geometry) — Two intersecting planes in three dimensional space In mathematics, a plane is a flat, two dimensional surface. A plane is the two dimensional analogue of a point (zero dimensions), a line (one dimension) and a space (three dimensions). Planes can …   Wikipedia

• plane angle — noun a) An angle formed by two intersecting straight lines. b) An angle formed by two intersecting planes, measured by the angle between two intersecting straight lines that are in respective planes and perpendicular to the intersection of the… …   Wiktionary

• Archipenko, Alexander — born May 30, 1887, Kiev, Ukr. died Feb. 25, 1964, New York, N.Y., U.S. Ukrainian U.S. sculptor. In 1908 he moved to Paris to study at the École des Beaux Arts, and he soon became active in radical circles such as the Cubist movement. He began to… …   Universalium

• Sphere — Globose redirects here. See also Globose nucleus. A sphere (from Greek σφαίρα sphaira , globe, ball, [ [http://www.perseus.tufts.edu/cgi bin/ptext?doc=Perseus%3Atext%3A1999.04.0057%3Aentry%3D%23101561 Sphaira, Henry George Liddell, Robert Scott,… …   Wikipedia

• Léger, Fernand — born Feb. 4, 1881, Argentan, Fr. died Aug. 17, 1955, Gif sur Yvette French painter. Born to a peasant family, he worked as an architectural draftsman in Paris before studying art. Influenced by Paul Cézanne and early Cubism, Léger developed a… …   Universalium

• dihedral angle — noun 1. : the angle between two intersecting planes 2. : dihedral II 2 * * * Geom. 1. the angle between two planes in a dihedron. 2. dihedron. [1820 30] * * * dihedral angle noun The angle made by the wing of an aeroplane wi …   Useful english dictionary

• dihedral angle — noun Etymology: di + hedral Date: 1826 a figure formed by two intersecting planes …   New Collegiate Dictionary

• Darien, Connecticut —   Town   Rings End Bridge …   Wikipedia

• Mathematics and art — have a long historical relationship. The ancient Egyptians and ancient Greeks knew about the golden ratio, regarded as an aesthetically pleasing ratio, and incorporated it into the design of monuments including the Great Pyramid,[1] the Parthenon …   Wikipedia

• Sharpening — is the process of creating or refining a sharp edge of appropriate shape on a tool or implement designed for cutting. Sharpening is done by grinding away material on the implement with an abrasive substance harder than the material of the… …   Wikipedia