A square is a regular polygon with two sets of parallel sides.
A parallelogram is an irregular polygon with one set of parallel sides.
A rhombus is an irregular polygon with two sets of parallel sides.
A rectangle is an irregular polygon with two sets of parallel sides.
*Note - a regular polygon is a shape in which all sides are equal in length and all angles are equal in measurement.
A shape with four sides. Example a square is a 4 sided shape
A trapezoid has two parallel sides.
A trapezoid is a four-sided figure (or "quadrilateral") with only one pair of parallel sides.
A rectangle is a shape that has four sides with two parallel lines.
A four-sided shape with only 2 sides the same length is called a rhombus.
Any 4 sided 2D shape
No, a pentagon has 5 sides. A four sided shape is called a quadrilateral. An example of a four sided shape is a square or a rectangle. However, there are also other four sided shaped like trapeziums and kites...
It can look like a four-sided shape with five sides or a five-sided shape with four sides. The term is self-contradictory and so such a shape cannot exist!
A four-sided shape in which only two sides are parallel is called a trapezoid. All two-dimensional, four-sided shapes are known as quadrilaterals.