#include<stdio.h>
#include<math.h>
#define P(x) pow(double(x),2)
 
 
 
int main(){
 
 
    int i,j,k;
    int n;
    double x[3],y[3];
    double xp,yp,r;
    double a1,a2,b1,b2,c1,c2;
     
    while((scanf("%d",&n))!=EOF){
        for(i=0;i<3;i++){
            scanf("%lf",&x[i]);
            scanf("%lf",&y[i]);
        }
        a1=2*(x[1]-x[0]);
        a2=2*(x[2]-x[1]);
        b1=2*(y[1]-y[0]);
        b2=2*(y[2]-y[1]);
        c1=(P(x[0])-P(x[1])+P(y[0])-P(y[1]));
        c2=(P(x[1])-P(x[2])+P(y[1])-P(y[2]));
     
        xp=(b1*c2-b2*c1)/(a1*b2-a2*b1);
        yp=(c1*a2-c2*a1)/(a1*b2-a2*b1);
        r=(double)(sqrt((long double)(((xp-x[0])*(xp-x[0]))+((yp-y[0])*(yp-y[0])))));  
 
 
        printf("%.3f %.3f %.3f\n",xp,yp,r);
 
    }
 
 
 
}