Question

what is a quadrilateral​

Answer 1

Answer:

In Euclidean plane geometry, a quadrilateral is a polygon with four edges (sides) and four vertices (corners). ... Quadrilaterals are simple (not self-intersecting) or complex (self-intersecting), also called crossed. Simple quadrilaterals are either convex or concave.

Answer 2

Answer:

In Euclidean plane geometry, a quadrilateral is a polygon with four edges (sides) and four vertices (corners). ... Quadrilaterals are simple (not self-intersecting) or complex (self-intersecting), also called crossed. Simple quadrilaterals are either convex or concave.