What is the name of the quadrilateral that has the following properties?Its diagonally opposite angles are the same.Its sides are of equal length.Its diagonals bisect each other at 90°.

Shapes have angles, faces and edges. Shapes can be two-dimensional (2D) or three-dimensional (3D). 2D shapes are flat, like triangles and squares and 3D shapes are solid, like cubes and pyramids. There are many different shapes.