Zero
A triangle has no parallel sides.
A triangle can never have any parallel sides.
A triangle has no sides parallel to each other.
None
None
None
An isosceles triangle has no parallel sides but it does have 2 sides of equal lengths
A right angle triangle has no parallel sides
What polygon had 6 sides and 6 angles
None but it does have 2 sides of equal length
A square has two pairs of parallel sides.It has two pairs of parallel sides.
It has 2 pairs of parallel sides