Related words to Quadrilateral

trapezium

Geometry. (in Euclidean geometry) any rectilinear quadrilateral plane figure not a parallelogram. a quadrilateral plane figure of which no two sides are parallel. British. trapezoid (def 1a).

Architecture. (in ancient Egypt) a quadrilateral masonry mass having smooth, steeply sloping sides meeting at an apex, used as a tomb. (in ancient Egypt and pre-Columbian Central America) a quadrilateral masonry mass, stepped and sharply sloping, used as a tomb or a platform for a temple.