\begin{ccRefFunction}{collinear}

\ccFunction{bool collinear(const Point_2<Kernel> &p, 
                           const Point_2<Kernel> &q, 
                           const Point_2<Kernel> &r);}
{returns \ccStyle{true}, iff $p$, $q$, and $r$ are collinear.}

\ccFunction{bool collinear(const Point_3<Kernel> &p,
                           const Point_3<Kernel>&q,
                           const Point_3<Kernel>&r);}
{returns \ccStyle{true}, iff $p$, $q$, and $r$ are collinear.}

\ccSeeAlso
\ccRefIdfierPage{CGAL::left_turn} \\
\ccRefIdfierPage{CGAL::orientation} \\
\ccRefIdfierPage{CGAL::right_turn} \\

\end{ccRefFunction}