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quadrilateral - Meaning and Examples

Meaning of 'quadrilateral' (Webster Dictionary)

1 . Quadrilateral [ a.]
- Having four sides, and consequently four angles; quadrangular.
2 . Quadrilateral [ n.]
- 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.