Ultraparallel hyperbolic lines
= Ultraparallel hyperbolic lines
Two hyperbolic lines are ultraparallel when they are disjoint and have no common ideal endpoint. They possess a unique common perpendicular, which realizes the distance between them.
= Ultraparallel hyperbolic lines
Two hyperbolic lines are ultraparallel when they are disjoint and have no common ideal endpoint. They possess a unique common perpendicular, which realizes the distance between them.