A plane intersects a line at a point, and i plane intersects another plane at a line.
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No, two planes do not intersect in exactly one plane unless the planes are exactly overlapping, making one plane. In Euclidean Geometry two planes intersect in exactly one line.
No because in Geometry, a plane goes on infinitely. No because in Geometry, a plane goes on infinitely.
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.
plane FJN
Two lines that do not intersect on the same plane are Parallel lines.