1510

// nm
#include <iostream>
#include <vector>
#include <cmath>

int kramer(double,double,double,double,double,double,double*,double*);
void midperpend (double,double,double,double,double*,double*,double*);
void circle(double x1, double y1, double x2, double y2, double x3, double y3, double *xc, double *yc, double *r);
#define EPS 1e-6


using namespace std;

int kramer(double a1,double b1, double c1,
           double a2,double b2, double c2, double *x, double *y)
{
  double d = a1 * b2 - a2 * b1;
  double dx = c1 * b2 - c2 * b1;
  double dy = a1 * c2 - a2 * c1;
  if (!d) return (dx == 0.0) + 1;
  *x = dx/d; *y = dy/d;
  return 0;
}

void midperpend(double x1, double y1, double x2, double y2,
                double *a, double *b, double *c)
{
  *a = x2 - x1;
  *b = y2 - y1;
  *c = (x1*x1 - x2*x2 + y1*y1 - y2*y2) / 2;
}

void circle(double x1, double y1, double x2, double y2, double x3, double y3,
            double *xc, double *yc, double *r)
{
  double a1,b1,c1,a2,b2,c2;
  midperpend(x1,y1,x2,y2,&a1,&b1,&c1);
  midperpend(x1,y1,x3,y3,&a2,&b2,&c2);
  kramer(a1,b1,-c1,a2,b2,-c2,xc,yc);
  *r = sqrt((x1 - *xc)*(x1 - *xc) + (y1 - *yc)*(y1 - *yc));
}

int main() {
 double x_1,x_2,x_3,y_1,y_2,y_3,xc,rc,yc,r,r1;
while(scanf("%lf %lf %lf %lf %lf %lf",&x_1,&y_1,&x_2,&y_2,&x_3,&y_3) == 6)
{
  circle(x_1,y_1,x_2,y_2,x_3,y_3,&xc,&yc,&r);
  if (fabs(xc) < EPS) printf("x^2"); else
  {
    printf("(x");
    if (xc >= 0.0) printf(" - "); else printf(" + ");
    printf("%.3lf)^2",fabs(xc));
  }
  printf(" + ");
  if (fabs(yc) < EPS) printf("y^2"); else
  {
    printf("(y",fabs(xc));
    if (yc >= 0.0) printf(" - "); else printf(" + ");
    printf("%.3lf)^2",fabs(yc));
  }
  printf(" = %.3lf^2\n",r);
  printf("x^2 + y^2");

  if (fabs(xc) > EPS)
  {
    if (xc > 0.0) printf(" - "); else printf(" + ");
    printf("%.3lfx",2*fabs(xc));
   }
  if (fabs(yc) > EPS)
  {
    if (yc > 0.0) printf(" - "); else printf(" + ");
    printf("%.3lfy",2*fabs(yc));
  }
  r1 = xc*xc + yc*yc - r*r;
  if (fabs(r1) > EPS)
  {
    if (r1 > 0.0) printf(" + "); else printf(" - ");
    printf("%.3lf",fabs(r1));
  }
  printf(" = 0\n\n");
}
return 0;
}