A quadrilateral is also commonly known as a “four-sided polygon.”
In geometry, a quadrilateral is defined as any shape that has four sides and four angles. The term ‘quadrilateral’ itself comes from the Latin words ‘quadri’ meaning four and ‘latus’ meaning side. This category includes various shapes such as squares, rectangles, trapezoids, rhombuses, and more. So while ‘four-sided polygon’ is an alternative name that describes its characteristics, the term ‘quadrilateral’ encompasses a wide range of specific shapes that fall under this classification.