There are some squares that are called trapezoids.

A Quadrilateral is a two-dimensional shape, closed, and has straight sides.

The definition of other types includes some types.A square, rhombus and rectangle are parallelograms.For more information, see below.

A square is the same length as a rhombus and all angles are 90.

The diagonals meet in the middle at a right angle.They "bisect" each other at right angles.

A parallelogram is equal in length.The angles "A" and "B" are the same.

There are left and right sides of equal length that join to the base at the same angles.

The only regular is a square.All other quadrilaterals are irregular.

We don't say that if all sides are equal then it is a square.

In daily life we think of a square as not being a rectangle, but in mathematics it is.

Oh yes!We call it a "Complex" or "Self-Intersecting" when two sides cross over.