CGAL 6.1.2 - 2D and 3D Linear Geometry Kernel

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Functions
CGAL::left_turn()
Reference Manual » Global Kernel Functions

##

See also
  `CGAL::collinear()`
  `CGAL::orientation()`
  `CGAL::right_turn()`

## Functions
template<typename Kernel >
bool | CGAL::left_turn (const CGAL::Point_2< Kernel > &p, const CGAL::Point_2< Kernel > &q, const CGAL::Point_2< Kernel > &r)
| returns `true` iff `p`, `q`, and `r` form a left turn.