CGAL 5.6.3 - 2D and 3D Linear Geometry Kernel

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Kernel::LeftTurn_2 Concept Reference
2D and 3D Linear Geometry Kernel Reference » Concepts » Kernel Function Object Concepts

## Definition

Refines
  `AdaptableTernaryFunction`

See also
  `CGAL::left_turn()`

## Operations
A model of this concept must provide:
bool | operator() (const Kernel::Point_2 &p, const Kernel::Point_2 &q, const Kernel::Point_2 &r)
| returns `true`, iff the three points `p`, `q` and `r` form a left turn.