Every quadrilateral has opposite sides, but I'm assuming you probably are asking about a trapezoid.
It is a trapezoid that has one pair of opposite parallel sides of different lengths.
It is a trapezoid which has 1 pair of opposite parallel sides of different lengths
A trapezium
rectangle
A kite
Then, the opposite sides are congruent.
parallelogram
It is a trapezoid that has one pair of opposite parallel sides of different lengths.
An isosceles trapezium
Parallel
sometimes
The Opposite Sides Parallel and Congruent Theorem states that if a quadrilateral has a pair of opposite sides that are parallel and congruent, then the quadrilateral is a parallelogram.
No. The congruent sides need not be parallel.
rhombus
A quadrilateral having only one pair of parallel sides is called a trapezoid (UK trapezium).A quadrilateral having two pair of parallel sides is a parallelogram (a square, a rectangle, a rhombus, or a two-dimensional rhomboid).
It is a trapezoid which has 1 pair of opposite parallel sides of different lengths
A trapezium.