
1) Four-sided 2) Having four sides 3) Many-sided 4) Multilateral
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https://www.crosswordclues.com/clue/quadrilateral

1) Multilateral 2) Parallelogram 3) Quadrangle 4) Tetragon 5) Trapezium 6) Trapezoid 7) Trapezoidal
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https://www.crosswordclues.com/clue/quadrilateral

The origin of the word `quadrilateral` is the two Latin words quadri, a variant of four, and latus, meaning `side`. Quadrilaterals are simple (not self-intersecting) or complex (self-intersecting), also called crossed. Simple quadrilaterals are either convex or concave. This is a special case of the n-gon interior angle sum formula (n − 2)
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http://en.wikipedia.org/wiki/Quadrilateral

four-sided
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http://orchidfetish.com/glossary.html

• (a.) Having four sides, and consequently four angles; quadrangular. • (n.) An area defended by four fortresses supporting each other; as, the Venetian quadrilateral, comprising Mantua, Peschiera, Verona, and Legnano. • (n.) A plane figure having four sides, and consequently four angles; a quadrangular figure; any figure formed by f...
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http://thinkexist.com/dictionary/meaning/quadrilateral/

(from the article `Christianity`) ...apostolic principles.` Among Episcopalians, the visionaries for unity included Thomas Hubbard Vail, William Augustus Muhlenberg, and William Reed ...
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http://www.britannica.com/eb/a-z/q/3

famous combination of four fortresses mutually supporting one another, during the Austrian rule of northern Italy. The four fortified towns were ...
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http://www.britannica.com/eb/a-z/q/3

A polygon that has four sides and four vertices (corners). Quadrilaterals, and polygons in general, may be convex or concave. A convex quadrilateral may be further classified as a trapezoid or a British trapezium (one pair of opposite sides are parallel), a trapezium (no sides parallel); an isoscele...
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http://www.daviddarling.info/encyclopedia/Q/quadrilateral.html

A cell near the base of the damselfly wing, whose shape is important in separating the families.
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http://www.earthlife.net/insects/glossary.html

1. <geometry> A plane figure having four sides, and consequently four angles; a quadrangular figure; any figure formed by four lines. ... 2. An area defended by four fortresses supporting each other; as, the Venetian quadrilateral, comprising Mantua, Peschiera, Verona, and Legnano. ... <geometry> Complete quadrilateral, the figure made ...
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http://www.encyclo.co.uk/local/20973

(kwod″rĭ-lat´әr-әl) having four sides. a four-sided figure.
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http://www.encyclo.co.uk/local/21001
Quad`ri·lat'er·al adjective [ Latin
quadrilaterus : confer French
quadrilatère ,
quadrilatéral . See
Quadri- and
Lateral .] Having four sides, and consequently four angles; quadrangular.
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http://www.encyclo.co.uk/webster/Q/2

four-sided
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http://www.orchidspecies.com/glossary.htm

A quadrilateral is a four-sided polygon.
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http://www.probertencyclopaedia.com/browse/GQ.HTM

[
adj] - having four sides 2. [n] - a four-sided polygon
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http://www.webdictionary.co.uk/definition.php?query=quadrilateral

a cell in the wing of a damselfly.
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https://www.amentsoc.org/insects/glossary/begins/with/q/

A four sided polygon. See also: Kite, Polygon.
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https://www.encyclo.co.uk/local/20687

A polygon with four sides
Examples:
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https://www.encyclo.co.uk/local/20874
four-sided adjective having four sides
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https://www.encyclo.co.uk/local/20974

Plane (two-dimensional) figure with four straight sides. The sum of all interior angles is 360°. The following are all quadrilaterals, each with distinguishing properties: square with four equal angles and sides, and four axes of symmetry; rectangle with four equal angles, opposite s...
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https://www.encyclo.co.uk/local/21221

having four sides.
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https://www.infoplease.com/dictionary/quadrilateral

A four-sided polygon.
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https://www.thoughtco.com/glossary-of-mathematics-definitions-4070804
[SAT terms] a four-sided polygon
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https://www.vocabulary.com/lists/156619
No exact match found.