An isosceles triangle has no parallel sides but it does have 2 sides of equal lengths
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It has 0 (zero) parallel sides!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
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 regular octagon has four pairs of parallel lines.
A square has 2 pairs of equal opposite parallel lines