trapezium
The four sided shape that has two parallel lines is called a trapezoid. A parallelogram is a four sided shape that has two pairs of parallel lines.
square, rectangle, parallelogram ...
A 25-sided shape would have no parallel sides !
A regular 6 sided hexagon has 3 pairs of parallel sides
How about a square, rectangle, rhombus or a parallelogram in which all have 2 pairs of opposite parallel sides.
A four sided shape with 2 parallel sides is called a trapezium. A four sided shape with 2 pairs of parallel sides is called a Parallelogram; This includes squares, rectangles and rhombi. If you want to find more about this you can check on google.
A kite
it is a square
2 parallel sides or 2 pairs of parallel sides?
It has 2 pairs of parallel sides
A four sided polygon with two pairs of parallel sides is called a Parallelogram.
It is a square or a rectangle