to me a quadrilateral always has parallel sides
Two sides of a quadrilateral can be parallel.
Trapezoid is the quadrilateral which have no parallel sides.
trapezoid
In the U.S., that is a specific kind of "trapezium", which is a quadrilateral with no parallel sides.AnswerA quadrilateral with no parallel sides and no equal sides is basically just that, a quadrilateral.
Trapezoids have only one pair of parallel sides.
A rhombus.
A quadrilateral with exactly one pair of parallel sides is called a trapezoid (or trapezium in some regions). The parallel sides are referred to as the bases, while the other sides are the legs. Trapezoids can be further classified into isosceles trapezoids if the non-parallel sides are of equal length.
A quadrilateral with at least one pair of parallel sides has multiple possible names, depending on what type of quadrilateral it is.SquareRectangleParallelogramRhomboidTrapezoidYou are probably looking for only one pair of parallel sides, which is a trapezoid - both regular and irregular.
If it doesn't have parallel sides, it's just classified as a quadrilateral.
The quadrilateral with two pairs of parallel sides
The key is the object is quadrilateral with parallel sides. It is a parallelogram. It is also a rhombus.
It is not possible to have a quadrilateral with four parallel sides - this would bea series of four parallel lines that do not intersect.A quadrilateral with four sides of equal length is a rhombus, however.And a quadrilateral with 2 pairs of parallel sides is a parallelogram.