A square
Any polygon with four or more sides can have a pair of parallel sides. It is also possible to to have non-polygonal shapes - eg a cigar-shape - that has parallel sides.
rhombus
Not all four-sided shapes have one pair of parallel sides. For example, a rectangle and a trapezoid can have one pair of parallel sides, but a general quadrilateral does not necessarily have any parallel sides. Shapes like rhombuses and squares have two pairs of parallel sides, while irregular quadrilaterals may have none. Thus, the presence of parallel sides depends on the specific type of four-sided shape.
Any polygon, other than a triangle, can have one pair of parallel sides.
A square
Any polygon with four or more sides can have a pair of parallel sides. It is also possible to to have non-polygonal shapes - eg a cigar-shape - that has parallel sides.
rectangular
rhombus
trapezoids
Not all four-sided shapes have one pair of parallel sides. For example, a rectangle and a trapezoid can have one pair of parallel sides, but a general quadrilateral does not necessarily have any parallel sides. Shapes like rhombuses and squares have two pairs of parallel sides, while irregular quadrilaterals may have none. Thus, the presence of parallel sides depends on the specific type of four-sided shape.
Any polygon, other than a triangle, can have one pair of parallel sides.
A trapezium, or any one of irregular polygons of 5 or more sides.
trapezoidTrapezoid.
You need at least one pair of parallel sides. Most trapezoids have that.
A shape with one or more parallel sides is called a trapezoid (or trapezium in some regions). In a trapezoid, at least one pair of opposite sides is parallel. Other shapes, like rectangles and parallelograms, also have parallel sides. These characteristics are key in distinguishing these geometric figures.
A polygon with 4 or more sides can have a pair of parallel sides.