## Kernel::ComputeSquaredRadius_2

A model for this must provide:

Kernel::FT | fo.operator() ( Kernel::Circle_2 c)
|  | returns the squared radius of c.

Kernel::FT

fo.operator() ( | Kernel::Point_2 p, Kernel::Point_2 q, Kernel::Point_2 r)

|  | returns the squared radius of the circle passing through p, q and r. Precondition: p, q and r are not collinear.

Kernel::FT

fo.operator() ( | Kernel::Point_2 p, Kernel::Point_2 q)

|  | returns the squared radius of the smallest circle passing through p, and q, i.e. one fourth of the squared distance between p and q.

### Refines

AdaptableFunctor (with one argument)

### See Also

CGAL::Circle_2<Kernel>
CGAL::squared_radius