I think a: Square, Rectangle(Oblong), Parallelogram & Rhombus.
Most of the time.If a quadrilateral contains no parallel lines or two pairs of parallel lines then it is not a trapezium.
A parallelogram
Not if the two pairs give rise to 4 parallel lines.
A square has.
rhombus
The quadrilateral with two pairs of parallel sides
They are rhombus and parallelogram.
It is called a Rhombus.
A rectangle.
parralelagram, which includes rectangles and squares
A rectangle, by definition is an irregular quadrilateral. It has two pairs of parallel sides.
If it has 2 pairs of parallel lines it is a parallelogram, if it is a quadrilateral. If there is not restrictions on the number of sides, then there are many answers