1. a polygon with four sides and four angles
Usage: geometry

1. having four sides
Usage: geometry

Examples

• A square is a special type of quadrilateral.
• The rectangle is the most common quadrilateral shape.
• Students learned to identify different quadrilateral figures.
• The quadrilateral field was divided into four equal sections.
• Parallelograms and trapezoids are both quadrilateral shapes.
• The architect designed a quadrilateral courtyard for the building.