None. Parallel lines do not intersect in Euclidean geometry.
Two lines can intersect at none, one or infinitely many points.
A point can be intersected by infinitely many lines. Two points intersect in only one line. Three points either intersect in a line or not at all. This is only considering two dimensions.
None. A marble is a sphere, so there are no points where lines intersect.
If no pair of lines is parallel and if each pairwise intersection is distinct, there will be 10 points of intersection.
None. Parallel lines do not intersect in Euclidean geometry.
4
Two lines can intersect at none, one or infinitely many points.
Two lines intersect at one point. If in two dimensions, and they do not intersect they are parallel. The other option in two dimensions is they are the co-linear, that is they are the same line, in which case they intersect at all points.
It depends on how you define "ways" and how you define "lines" and how you define "intersect" and what kind of geometry you're talking about, but in Euclidean geometry, lines either never intersect, or they intersect at a single point, or they can intersect at all points within the lines.
A point can be intersected by infinitely many lines. Two points intersect in only one line. Three points either intersect in a line or not at all. This is only considering two dimensions.
None. A marble is a sphere, so there are no points where lines intersect.
Depends on the lines. Anywhere from zero to infinitely many. If they are straight lines, then the answer is zero, one or infinity.
If no pair of lines is parallel and if each pairwise intersection is distinct, there will be 499500 points of intersection.
If no pair of lines is parallel and if each pairwise intersection is distinct, there will be 10 points of intersection.
If no pair of lines is parallel and if each pairwise intersection is distinct, there will be 6 points of intersection.
Any two lines can only have one point of intersection. Unless they are parallel, in which case they do not intersect at all. If they are the same line, then they intersect at an infinite number of points.