A quadrilateral, in geometry, is a polygon with 4 sides.

Look up quadrilateral or quadrilatéral in Wiktionary, the free dictionary.

Quadrilateral may also refer to:

• Complete quadrilateral, in projective geometry, a configuration with 4 lines and 6 points
• Chicago-Lambeth Quadrilateral, a four-point statement of fundamental doctrine, in the Anglican Communion
• Wesleyan Quadrilateral, the four sources of doctrine in the Methodist Church
• Golden Quadrilateral, a network of highways in India
• Quadrilateral Security Dialogue, a strategic alliance of the United States, Japan, Australia and India within Asia.
• Quadrilateral Treaty, a pact between the Argentine provinces of Buenos Aires, Santa Fe, Entre Ríos and Corrientes, signed on 25 January 1822.
• Quadrilatero, in the Revolutions of 1848, in the Italian states - an area within the group of fortresses at Mantua, Verona, Peschiera and Legnago
• Quadrilateral (horse), thoroughbred racehorse
• "Quadrilateral", an alternative name for Southern Dobruja mostly used by Romanians (Cadrilater)

• Quadriliteral
• Quadrangle (geography)

This disambiguation page lists articles associated with the title Quadrilateral.
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