None.
It depends on the pentagon. If it is regular, then there are no parallel sides.
A regular octagon has four pairs of parallel lines.
Yes, a regular hexagon has 3 pairs of parallel lines. The opposite sides are parallel.
A regular dodecagon has six pairs of parallel lines.
A regular decagon will have 5 pairs of parallel sides, however, irregular decagons can have no parallel sides.
A regular pentagon has no parallel lines.
A hexagon has three pairs of parallel sides. A pentagon has no lines parallel. Above answer is correct but only if they are regular hexagon and pentagons. A non-regular hexagon can have as little as none parallel lines. A non-regular pentagon can have two parallel lines.
A pentagon has no parallel lines.
No.
None, for a regular pentagon. Not all pentagons are necessarily regular (all sides and angles the same). You can make a pentagon with 2 pairs of parallel lines. Take a square, and cut off one corner. Now you have a 5-sided polygon (pentagon) with 2 pairs of parallel sides.
It depends on the pentagon. If it is regular, then there are no parallel sides.
It can have 0, 1 or 2 pairs of parallel lines.
A regular octagon has four pairs of parallel lines.
Yes, a regular hexagon has 3 pairs of parallel lines. The opposite sides are parallel.
A regular dodecagon has six pairs of parallel lines.
A pentagon can have 0, 1 or 2 pairs of parallel lines. It can have 0 to 4 lines perpendicular to an adjacent line. A rhombus must have two pairs of parallel lines and none of them may be perpendicular to any other.
a regular hexagon