1 pair of parallel line
None
One pair.
Just one. And the other pair cannot be parallel.
a rhombus has 4 equal sides
A triangle can have no parallel lines.
it has too parallel lines!
A pentagon has no parallel lines.
A cone does not have any parallel lines
how many sets of parallel lines are in a triangle
A square has 2 pairs of opposite parallel lines.
A cube has exactly 6 parallel lines.