A triangle cannot have any parallel sides.
A triangle can have no parallel lines.
None because a triangle only has 3 sides of which none can be parallel to each other
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A right angle triangle has no parallel sides
A pentagon has no parallel lines.
it has too parallel lines!
It depends on the dimensions of the triangle, some have 0, but no triangle will ever have more than 3 lines of symmetry.
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.
2 pairs of parallel lines