A triangle has no parallel lines
A triangle can never have any parallel sides.
A triangle has no sides parallel to each other.
ZERO!
A square has two pairs of opposite parallel lines whereas a triangle has none.
A trapezoid has a pair of opposite parallel lines of different lengths A square has 2 pairs of opposite parallel lines of equal lengths A triangle has no parallel lines
There are absolutely 0 parallel lines in any given triangle.
None
There cannot be parallel lines in any [plane] triangles.
What polygon had 6 sides and 6 angles
An isosceles triangle has no parallel sides but it does have 2 sides of equal lengths
A diamond has two pairs of parallel lines.