A quadrilateral has 4 sides, 2 in which never intersect. Therefore, the lines that don't intersect are called parallel. There are 4 parallel sides but has 2 pairs of parallel sides.
It is a quadrilateral with exactly 2 pairs of parallel sides.
A parallelogram.
A quadrilateral has four sides and four vertices but no sides need to be parallel although they can be.
No. Every quadrilateral has 2 pairs of oposite sides. A paralelogram has two pairs of parallel sides. Cf wikipedia!
A parallelogram
It is a rectangle.
The Rectangle and the Parallelogram both have 2 pairs of parallel sides. The Trapezium has 4 sides but only 2 are a parallel pair. The Kite has 2 pairs of equal sides but none parallel. The limits is an irregular quadrilateral with no side equal or parallel to another.
A trapezoid.
parallelogram
rectangle
hexagon