namespace CGAL {
/*!
  \ingroup PkgCircularKernel3GeometricClasses

  The enum `Circle_type` is used to classify an object of type `Circle_3`, so as to specify 
  its type (normal,polar,bipolar or threaded), as defined in Section  \ref sectionSKobjects.

  \sa `CGAL::classify()`
*/
enum Circle_type {NORMAL, THREADED, POLAR, BIPOLAR};
} /* end namespace CGAL */
