All triangles have no pairs of parallel lines.
Any regular polygon with an oddnumber of sides (regular pentagons, heptagons, nonagons, etc) also have no parallel lines.
Most irregular polygons will have no parallel sides, either.
A hexagon.
A triangle
a square or rhombus
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 parallelogram, maybe?
a squareof course
parallelogram
A rectangle
A regular octagon.
None
parallelogram
A triangle
A hexagon.
No, one pair.
Square, Rectangle.
A Hexagon has 3 pairs of parallel line and all angles are obtuse.
A regular hexagon.