Maybe
Yes, a cylinder has parallel lines. Specifically, the edges of the circular bases of the cylinder are parallel to each other, as are the lines that run vertically along the height of the cylinder. These lines maintain a constant distance apart and do not intersect, which is the defining characteristic of parallel lines.
A cylinder includes an infinite number of parallel lines. Every line in the curved surface is parallel to every other one and perpendicular to the two ends. . "A cylinder 2" is meaningless. You would have to look at the homework you're trying to get the answer for to see what cylinder 2 means.
Infinitely many.
A pair of parallel lines, an ellipse or a circle.
A cylinder has 2 congruent bases, parallel lines called "elements" that connect the bases, and can have neither concave nor convex properties.
No. The sides of a cylinder are not parallel.
When two lines are parallel, then they do not intersect.
If they were not actually parallel then they would not be parallel lines!
no parallel lines
it has parallel lines
parallel lines are diagonal lines or increasing lines
The locus of points at a given distance to a line would be a line parallel to the first line. Assuming that both lines are straight.