What is a quadrilateral shape?
A quadrilateral is a polygon in Euclidean plane geometry with four edges (sides) and four vertices (corners).
What’s the spelling of quadrilateral?
The quadrilateral is a shape you’ll learn about in geometry. Quadrilaterals include more than one type of shape, but all quadrilaterals have four sides. The most common type of quadrilateral is the square, but rectangles and rhombuses are quadrilaterals too. Quadrilaterals are also called quadrangles and tetragons.