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1. Geometry a plane figure consisting of four points connected by four lines. In a complete quadrangle, six lines connect all pairs of points
2. a rectangular courtyard, esp one having buildings on all four sides
3. the building surrounding such a courtyard

A rectangular courtyard or grassy area enclosed by buildings, most often used in conjunction with academic or civic building groupings.

[′kwä‚draŋ·gəl]
(civil engineering)
A four-cornered, four-sided courtyard, usually surrounded by buildings.
The buildings surrounding such a courtyard.
A four-cornered, four-sided building.
(mapping)
A four-sided tract of land, defined by parallels of latitude and meridians of longitude, used as an area unit in systematic mapping.
(mathematics)
A geometric figure bounded by four straight-line segments called sides, each of which intersects each of two adjacent sides in points called vertices, but fails to intersect the opposite sides. Also known as quadrilateral.

1. A rectangular courtyard or grassy area enclosed by buildings or a building. Most often used in connection with academic or civic building groupings.
References in periodicals archive ?
Designed by architect William Schroeder, 3 Huntington Quadrangle was constructed in 1971.
The Quadrangle will be open from 10am to 4pm on Saturday and pre-booking is essential.
Ringed by the work of three generations of master builders, the Quadrangle boasts pedestrian pathways, ornamental trees and other plantings, benches and tables, bicycle racks, lamps and a broad lawn for future Commencements.
Quadrangle Development Corporation is a leading full-service real estate developer and investor in Washington, DC., Maryland and Virginia.
In this paper, a generalized quadrangle ("GQ") is a point-line incidence geometry [GAMMA] = (P, B, I) for which the following axioms are satisfied:
The most fruitful way to construct finite generalized quadrangles is through a now standard group coset geometry construction, in which a group E provided with certain sets of subgroups E = {[E.sub.i] | i [member of] I} and E* = {[E.sub.i]* | i [member of] I}, I an index set, and satisfying some strong intersection properties, is used to represent a generalized quadrangle.
As many as 90 brightly coloured figures up to 2.5m tall will populate Old College quadrangle. The lantern army includes women and children as well as men with horses.
Included with the text is a fold-out color plate offering a bedrock geologic map of part of the Silcott Quadrangle and part of the Clarkston Quadrangle, Clarkston, Washington.
Moving to the beauty of West Wales, the cracks in this strange little love quadrangle begin to show, with everything culminating in recrimination, violence and the end of the relationship.
Retout, 53, of Ruthin, was a partner at London-based Quadrangle Group LLP, where he was in charge of finances, when he submitted invoices for work he had not done between 2007 and 2008.
Year 6 teacher Melanie Weir and teaching assistant Julie Kennard and 27 pupils took on the project to turn an overgrown quadrangle into an outdoors space to be proud of.
Gary and I accept this award on behalf of our team at Triangle Properties and Quadrangle Properties, as well as the many consultants and professionals who made my green building vision a reality,” said David Abel, SIOR, founder Triangle Properties and Quadrangle Properties.

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