All of them have parallel sides except for the trapezoid.
A square's opposite sides are parallel and all the sides are congruent.
There are quadrilaterals that have no parallel sides. (basically, a quadrilateral is just any enclosed shape with 4 sides) But all quadrilaterals have angles.
A quadrilateral
a rhombus
No. A quadrilateral is a shape with four sides. A parallelogram is a quadrilateral with two pairs of parallel sides. Not all quadrilateral are parallelograms. All parallelograms, however, are quadrilaterals.
Parallelogram
A square
no some shapes like the rhombus have 4 sides making it a quadrilateral but 2 of its sides are not parallel
A rectangle is a quadrilateral (4 sides) and has all right angles and 2 pairs of parallel sides. A trapezoid is also a quadrilateral, but has only 1 pair of parallel sides.
The general form is a rhombus.
A quadrilateral with only two pairs of parallel sides