There are 2 sets of parallel lines.
2 sets of Parallel lines
trapazoid has 1 set parallel lines and a rhombus has 2 sets of parallel lines
I'm not sure is it a parallelogram?
The rhombus.
there are 2 sets of parallel lines in a square
There are 2 sets of parallel lines.
No. A parallelogram has two sets of parallel sides.
2 sets of Parallel lines
There cannot be parallel lines in any [plane] triangles.
No
A square, a rectangle, a rhombus and a parallelogram are 4 sided quadrilaterals that have 2 sets of parallel lines.
A rectangle has 2 "SETS" of parallel lines. SO it has 4 parallel lines.Two pairs.
There are no parallel sides in a right angle triangle
No triangle has parallel sides but an isosceles triangle has two equal sides of the same lengths.
2 paris of lines
You can't... A rectangle is defined by 2 sets of parallel lines, ans a parallelogram has 1+ sets of parallel lines