four sides, four right angles, 2 pairs of parallel lines
Prism
They are prisms. The bases may be any polygons with three or more sides.
If at least two of the three lines are parallel, the three lines will not form a triangle.
Non-intersecting lines in 3-D space may be parallel but need not be.
Infinitely many. Polygons with 6 or more sides can have 3 pairs of parallel lines. Polygons with 7 or more sides can have a set of three parallel lines.
There can be no convex polygon with three parallel sides. There are concave polygons with 6 or more sides that have three parallel lines.
A hexagon
2 parallel lines * * * * * The above answer is not wholly correct. A hexagon can have one, two or three pairs of parallel lines: a regular hexagon has 3 pairs.
2 parallel lines * * * * * The above answer is not wholly correct. A hexagon can have one, two or three pairs of parallel lines: a regular hexagon has 3 pairs.
A rectangular prism has three pairs of parallel lines. The top and bottom faces are parallel to each other, the front and back faces are parallel, and the two side faces are parallel. This makes a total of three pairs of parallel lines in a rectangular prism.
Three pairs and one triplet. The triplet can be considered three pairs.
Yellow
Three pairs: all six sides are members of a parallel pair.
Contributor Answer 1A cube has 6 parallel lines.______________________________________Contributor Answer 2I count three sets of parallel lines, with 4 lines in each set.________________________________________Contributor Answer 3A cube has 12 pairs of 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.
Regular polygons.