Maybe
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.
No. The sides of a cylinder are not parallel.
A cylinder has 2 congruent bases, parallel lines called "elements" that connect the bases, and can have neither concave nor convex properties.
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
= parallel + perpendicular As such no, perpendicular lines do not naturally have parallel lines. However...connect the lines in the symbols below. ++ ++ And you'll have 4 perpendicular lines, and 4 parallel lines.
the answer is parallel lines