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(kwŏd′rə-lăt′ər-əl)
n.
A polygon having four sides.
Having four sides.

(ˌkwɒdrɪˈlætərəl)
(Mathematics) having or formed by four sides
n
(Mathematics) Also called: tetragon a polygon having four sides. A complete quadrilateral consists of four lines and their six points of intersection

(ˌkwɒd rəˈlæt ər əl)

1. having four sides.
n.
2. Geom.
a. a polygon with four sides.
b. a figure formed by four straight lines that have six points of intersection.

(kwŏd′rə-lăt′ər-əl)
A polygon that has four sides, such as a rectangle or rhombus.
ThesaurusAntonymsRelated WordsSynonymsLegend:
 Noun 1 quadrilateral - a four-sided polygon      polygon, polygonal shape - a closed plane figure bounded by straight sidesparallelogram - a quadrilateral whose opposite sides are both parallel and equal in lengthtrapezium - a quadrilateral with no parallel sidestrapezoid - a quadrilateral with two parallel sides Adj. 1 quadrilateral - having four sidesfour-sidedmany-sided, multilateral - having many parts or sides
Translations
رُباعي الأضْلاع
čtyřúhelník
firkant
nelikulmio
fjórhliîa hlutur

ketursienis
četrstūris
vierhoekvierhoekig
štvoruholník

[ˌkwɒdrɪˈlætərəl]
B. N

nViereck nt

(kwodriˈlӕtərəl) noun
a two-dimensional figure with four straight sides.
References in classic literature ?
Instead of making use of the square or rectangle, as has been done to this time, you will suppose your place inclosed in a regular hexagon, this polygon having the advantage of offering more angles than the quadrilateral one.
Those which first caught the eye were the Bernardins, with their three bell towers; Sainte-Geneviève, whose square tower, which still exists, makes us regret the rest; the Sorbonne, half college, half monastery, of which so admirable a nave survives; the fine quadrilateral cloister of the Mathurins; its neighbor, the cloister of Saint-Benoit, within whose walls they have had time to cobble up a theatre, between the seventh and eighth editions of this book; the Cordeliers, with their three enormous adjacent gables; the Augustins, whose graceful spire formed, after the Tour de Nesle, the second denticulation on this side of Paris, starting from the west.
Close beside it one descried the quadrilateral enclosure of the fair of Saint- Germain, where the market is situated to-day; then the abbot's pillory, a pretty little round tower, well capped with a leaden cone; the brickyard was further on, and the Rue du Four, which led to the common bakehouse, and the mill on its hillock, and the lazar house, a tiny house, isolated and half seen.
Before a big fire lay Captain Smollett; and in a far corner, only duskily flickered over by the blaze, I beheld great heaps of coin and quadrilaterals built of bars of gold.
The loss of the RoC (Taiwan) as friendly territory would be a severe blow to the ability of the Quadrilateral Alliance to operate off the east coast of Asia, and consequently, this would be a development that would be so unwelcome to Quad members as to ensure that strenuous action will get taken to keep the RoC (Taiwan) as friendly to Washington, Tokyo, Canberra and Delhi as it now is.
The Quadrilateral Intelligence Center with members of the military attachs of Iran, Russia, Iraq and Syria, is headed by the Iraqi Military Information Organization since its foundation in 2015.
We will seek to increase quadrilateral cooperation with Japan, Australia, and India," said the 68-page document.
The last quadrilateral energy summit hosting Cyprus, Israel, Greece and Italy was held in Israel in April when the sides signed a declaration to move forward with the project.
The quadrilateral arrangement will again be in operation.
For this lesson, I set the challenge that students could only use quadrilateral shapes; squares, rectangles, rhombuses, parallelograms, trapezoids and kites to create a two-dimensional holiday nutcracker.
Part of the Quadrilateral was also taken but, to the left of the Royal Warwicks, the 31st Division was hung up below Serre, whilst to the right the 4th Division had been unable to reach its goal of the Munich Trench.
We discussed in details the quadrilateral meeting to be held today (Wednesday) in the afternoon and other important issues," Dr Zakhilwal said in a brief statement posted online.

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