Yes. Any two distinct lines of longitude, for example, meet at two points - the poles.
On a plane, though, two points define a unique line. So if two lines intersect at more than one point they must be coincident.
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Perpendicular lines intersect at one point only.
two lines intersect at a single point in a 2D space assuming they are not parallel. in 3D space they can intersect again at a single point, or an infinite amount of points.
A point where two or more lines intersect
intersection
The answer depends on what lines r and s are, and where point w is.