QUADRILATERAL • E-FREE TRANSLATION.COM • Definition of Quadrilateral

Add this Dictionary
to your website!
See more options...

Listen

noun

Quadrilateral n.

(Geom.) A plane figure having four sides, and consequently four angles; a quadrangular figure; any figure formed by four lines.

An area defended by four fortresses supporting each other; as, the Venetian quadrilateral, comprising Mantua, Peschiera, Verona, and Legnano.

Complete quadrilateral (Geom.), the figure made up of the six straight lines that can be drawn through four points, A, B, C, I, the lines being supposed to be produced indefinitely.

See images of 'Quadrilateral'

Etymology of 'Quadrilateral'

Collaborative International Dictionary of English 0.48

Share |

"Quadrilateral" Quotes from Famous Books

... crystallised in prisms of various numbers of sides: of these prisms the greater part were hexahedral and irregular. Another mass was composed of prisms in the form of truncated pyramids; and in another he found quadrilateral and octahedral prisms, the former splitting parallel to the faces, and also truncated pyramids with five and six sides. He adds, that he had frequently seen in the upper valleys tufts of ice growing, as it were, out of the ground, and striated externally, but had never ...

— Ice-Caves of France and Switzerland • George Forrest Browne

... perspective, draw base of quadrilateral AD, divide it into four equal parts, and from each division draw lines to point of sight. From h drop perpendicular ho, and form equilateral triangle mno. Take the height ho and measure it twice along ...

— The Theory and Practice of Perspective • George Adolphus Storey

Words linked to "Quadrilateral" : parallelogram, trapezium, multilateral, four-sided, many-sided, polygon, tetragon