CGAL 6.1.1 - 2D and 3D Linear Geometry Kernel

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Kernel::AreParallel_2 Concept Reference
Reference Manual » Concepts » Kernel Function Object Concepts

## Definition

Refines
  `AdaptableBinaryFunction`

See also
  `CGAL::parallel()`

## Operations
A model of this concept must provide:
bool | operator() (const Kernel::Line_2 &l1, const Kernel::Line_2 &l2)
| returns `true`, if `l1` and `l2` are parallel or if one of those (or both) is degenerate.
bool | operator() (const Kernel::Ray_2 &r1, const Kernel::Ray_2 &r2)
| returns `true`, if `r1` and `r2` are parallel or if one of those (or both) is degenerate.
bool | operator() (const Kernel::Segment_2 &s1, const Kernel::Segment_2 &s2)
| returns `true`, if `s1` and `s2` are parallel or if one of those (or both) is degenerate.