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## CGAL::parallel

bool | parallel ( Line_2<Kernel> l1, Line_2<Kernel> l2)
|  | returns true, if l1 and l2 are parallel or if one of those (or both) is degenerate.
bool | parallel ( Ray_2<Kernel> r1, Ray_2<Kernel> r2)
|  | returns true, if r1 and r2 are parallel or if one of those (or both) is degenerate.
bool | parallel ( Segment_2<Kernel> s1, Segment_2<Kernel> s2)
|  | returns true, if s1 and s2 are parallel or if one of those (or both) is degenerate.
bool | parallel ( Line_3<Kernel> l1, Line_3<Kernel> l2)
|  | returns true, if l1 and l2 are parallel or if one of those (or both) is degenerate.
bool | parallel ( Plane_3<Kernel> h1, Plane_3<Kernel> h2)
|  | returns true, if h1 and h2 are parallel or if one of those (or both) is degenerate.
bool | parallel ( Ray_3<Kernel> r1, Ray_3<Kernel> r2)
|  | returns true, if r1 and r2 are parallel or if one of those (or both) is degenerate.
bool | parallel ( Segment_3<Kernel> s1, Segment_3<Kernel> s2)
|  | returns true, if s1 and s2 are parallel or if one of those (or both) is degenerate.

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The CGAL Project . Tue, December 21, 2004 .