Kernel::AreParallel

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Kernel::AreParallel_2

A model for this must provide:

bool	fo.operator() ( Kernel::Line_2 l1, Kernel::Line_2 l2)
		returns true, if l1 and l2 are parallel or if one of those (or both) is degenerate.

bool	fo.operator() ( Kernel::Ray_2 r1, Kernel::Ray_2 r2)
		returns true, if r1 and r2 are parallel or if one of those (or both) is degenerate.

bool	fo.operator() ( Kernel::Segment_2 s1, Kernel::Segment_2 s2)
		returns true, if s1 and s2 are parallel or if one of those (or both) is degenerate.

AdaptableFunctor (with two arguments)