Here you will find one or more explanations in English for the word Quadrilateral. Also in the bottom left of the page several parts of wikipedia pages related to the word Quadrilateral and, of course, Quadrilateral synonyms and on the right images related to the word Quadrilateral.

Quadrilateral Quad`ri*lat"er*al, n. 1. (Geom.) 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. 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.

## Meaning of Quadrilateral from wikipedia

- A quadrilateral is a polygon in Euclidean plane geometry with four edges (sides) and four vertices (corners). Other names for quadrilateral include quadrangle...
- The Golden Quadrilateral (GQ) is a national highway network connecting most of the major industrial, agricultural and cultural centres of India. It forms...
- In Euclidean geometry, a cyclic quadrilateral or inscribed quadrilateral is a quadrilateral whose vertices all lie on a single circle. This circle is...
- rhombi or rhombuses) is a quadrilateral whose four sides all have the same length. Another name is equilateral quadrilateral, since equilateral means that...
- A quadrilateral, in geometry, is a polygon with 4 sides. Quadrilateral may also refer to: Complete quadrilateral, in projective geometry, a configuration...
- In geometry, a square is a regular quadrilateral, which means that it has four equal sides and four equal angles (90-degree angles, or 100-gradian angles...
- geometry, a rectangle is a quadrilateral with four right angles. It can also be defined as: an equiangular quadrilateral, since equiangular means that...
- The Quadrilateral Security Dialogue (abbr. QSD, also known as the Quad or Asian NATO) is an informal strategic forum between the United States, ****an...
- In Euclidean geometry, a convex quadrilateral with at least one pair of parallel sides is referred to as a trapezium (/trəˈpiːziəm/) in English outside...
- In Euclidean geometry, a bicentric quadrilateral is a convex quadrilateral that has both an incircle and a cir****circle. The radii and center of these...