You do not mention the number of sides or even if the sides are straight, but you are probably asking about a trapezium or trapezoid.
A rhombus has 4 sides of equal length, opposing parallel sides, and no right angles
Most irregular polygons.
a square or a parallelogram
A trapeziod.
Rhombus
Rectangle
A rhombus has 4 sides of equal length, opposing parallel sides, and no right angles
trapizoid
squarerectangletrapezoidrhombus
trapizoid
A square
A parallelogram.
Most irregular polygons.
a square or a parallelogram
parallelogram
rhombus
A trapeziod.