parralelagram, which includes rectangles and squares
It is called a Rhombus.
A rectangle.
The quadrilateral with two pairs of parallel sides
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parallelogram
A quadrilateral. (There isn't a more specific word for it.)
A kite, an arrowhead or a general quadrilateral with no specific name.
It is a quadrilateral comprising two pairs of PARALLEL sides.
irregular quadrilateral
A square. -Michelle
There are lots of different quadrilaterals that do not have two pairs of parallel sides: a kite, arrowhead, trapezium, and a shape which has no specific name.
The quadrilateral with 1 pair of opposite sides parallel is called a trapezoid.