- polar vertex
- мат.полярная вершина
English-Russian scientific dictionary. 2008.
English-Russian scientific dictionary. 2008.
Polar sine — In mathematics, the polar sine of a vertex angle of a polytope is defined as follows. Let v 1, ..., v n , n ≥ 2, be non zero vectors from the vertex in the directions of the edges. The polar sine of the vertex angle is: operatorname{psin}(v… … Wikipedia
polar triangle — noun : a spherical triangle formed by the arcs of three great circles each of whose poles is the vertex of a given spherical triangle … Useful english dictionary
Geographic coordinate system — Map of Earth showing lines of latitude (horizontally) and longitude (vertically), Eckert VI projection; large version (pdf, 3.12MB) … Wikipedia
Dual polyhedron — The dual of a cube is an octahedron, shown here with vertices at the cube face centers … Wikipedia
Hyperbola — This article is about a geometrical curve, a conic section. For the term used in rhetoric, see Hyperbole … Wikipedia
Cissoid of Diocles — construction In geometry, the cissoid of Diocles is a cubic plane curve notable for the property that it can be used to construct two mean proportionals to a given ratio. In particular, it can be used to double a cube. It can be defined as the… … Wikipedia
Pythagorean theorem — See also: Pythagorean trigonometric identity The Pythagorean theorem: The sum of the areas of the two squares on the legs (a and b) equals the area of the square on the hypotenuse (c) … Wikipedia
Parabola — For other uses, see Parabola (disambiguation). A parabola … Wikipedia
Dual polygon — In geometry, polygons are associated into pairs called duals, where the vertices of one correspond to the edges of the other. Contents 1 Properties 2 Kinds of duality 2.1 Rectification … Wikipedia
Dual curve — Curves, dual to each other; see below for properties. In projective geometry, a dual curve of a given plane curve C is a curve in the dual projective plane consisting of the set of lines tangent to C. There is a map from a curve to its dual,… … Wikipedia
Triangle — This article is about the basic geometric shape. For other uses, see Triangle (disambiguation). Isosceles and Acute Triangle redirect here. For the trapezoid, see Isosceles trapezoid. For The Welcome to Paradox episode, see List of Welcome to… … Wikipedia