A triangle has no parallel lines
none
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A diamond has two pairs of parallel lines.
Here are three shapes that have two pairs of parallel lines: square parallelogram rectangle There are many polygons with at least two pairs of parallel lines. hexagon (has 3 pairs of parallel lines) octagon (has 4 pairs) decagon (has 5 pairs)
A rhombus has 2 pairs of parallel lines.
A hexagon generally has 3 pairs of parallel lines.
A regular dodecagon has six pairs of parallel lines.
A trapezoid does not has 2 pairs of parallel lines. A parallelogram does.
it has 2 pairs of parallel lines
A regular octagon has four pairs of parallel lines.
A square has 2 pairs of equal opposite parallel lines