1. quadrilateral, quadrangle, tetragon - a four-sided polygon
   --₁ is a kind of polygon, polygonal shape
   --₁ has particulars: parallelogram; trapezium; trapezoid
   

Quadrilaterals

Noun: Quadrilaterals are a category of polygons with four sides and four angles. They are a fundamental concept in geometry, and their properties and classifications are extensively studied.

Example sentence: "The square, rectangle, rhombus, and trapezoid are all examples of quadrilaterals."

Quadrilaterals

Adjective: In popular language, "quadrilaterals" is used to describe anything related to or characterized by having four sides or angles.

Example sentence: "The building's architecture features unique quadrilateral windows on each floor."

Quadrilaterals

Related products: Books on Quadrilaterals, Geometric Shape Toys, Geometry Posters