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pencil of circles

См. также в других словарях:

  • Pencil (mathematics) — A pencil is a family of geometric objects, such as lines, that have a common property, such as passage through a given line in a given plane.In more technical language, a pencil is the special case of a linear system of divisors in which the… …   Wikipedia

  • pencil — [pen′səl] n. [ME pencel < MFr pincel < VL * penicellus < L penicillus, a brush < dim. of penis, a tail, PENIS: mod. sense & form infl. by PEN2] 1. Archaic an artist s small, fine brush 2. the individual style or ability of an artist 3 …   English World dictionary

  • Circles of Apollonius — Apollonian circle redirects here. For a subdivision of this subject, see Apollonian circles. The term circle of Apollonius is used to describe several types of circles associated with Apollonius of Perga, a renowned Greek geometer. Most of these… …   Wikipedia

  • Apollonian circles — Some Apollonian circles. Every blue circle intersects every red circle at a right angle. Every red circle passes through the two points, C and D, and every blue circle separates the two points. This article discusses a family of circles sharing a …   Wikipedia

  • Optical mark recognition — (also called Optical Mark Reading and OMR) is the process of capturing human marked data from document forms such as surveys and tests. Contents 1 OMR background 2 OMR software 2.1 Open Source …   Wikipedia

  • Complete quadrangle — A complete quadrangle (at left) and a complete quadrilateral (at right). In mathematics, specifically projective geometry, a complete quadrangle is a system of geometric objects consisting of any four points in the Euclidean plane, no three of… …   Wikipedia

  • Compass (drafting) — This article is about the drafting instrument. For other uses, see Compass (disambiguation). A beam compass and a regular compass …   Wikipedia

  • Lie sphere geometry — is a geometrical theory of planar or spatial geometry in which the fundamental concept is the circle or sphere. It was introduced by Sophus Lie in the nineteenth century. [The definitive modern textbook on Lie sphere geometry is Harvnb|Cecil|1992 …   Wikipedia

  • Hyperbola — This article is about a geometrical curve, a conic section. For the term used in rhetoric, see Hyperbole …   Wikipedia

  • Ellipse — Elliptical redirects here. For the exercise machine, see Elliptical trainer. This article is about the geometric figure. For other uses, see Ellipse (disambiguation). Not to be confused with ellipsis. An ellipse obtained as the intersection of a… …   Wikipedia

  • Ellis Paul Torrance — (October 8, 1915 July 12, 2003) was an American psychologist from Milledgeville, Georgia. After completing his undergraduate degree at Mercer University, he went on to complete a Master s degree at the University of Minnesota, and then a… …   Wikipedia

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