#include <iostream>
#include <cstring>
#include <algorithm>
#include <cstdio>
#include <cmath>
using namespace std;
struct Point
{double x,y;Point(double a=0,double b=0):x(a),y(b) {}
};
typedef Point Vector;
Vector operator +(Vector A,Vector B) { return Vector(A.x+B.x,A.y+B.y); }
Vector operator -(Point A,Point B) { return Vector(A.x-B.x,A.y-B.y); }
Vector operator *(Vector A,double p){ return Vector(A.x*p,A.y*p); }
Vector operator /(Vector A,double p) { return Vector(A.x/p,A.y/p); }
double Dot(Point A,Point B) { return A.x*B.x+A.y*B.y; }
double Cross(Vector A,Vector B) { return A.x*B.y-A.y*B.x; }
double Length(Vector A) { return sqrt(Dot(A,A)); }
double Angle(Vector A,Vector B) { return acos(Dot(A,B)/Length(A)/Length(B)); }
Vector Rotate(Point A,double rad) { return Vector(A.x*cos(rad)-A.y*sin(rad),A.x*sin(rad)+A.y*cos(rad)); }
Point Getlineintersectoin(Point P,Vector v,Point Q, Vector w)
{Vector u=P-Q;double t=Cross(w,u)/Cross(v,w);return P+v*t;
}
Point getD(Point A,Point B,Point C)
{Vector v1=C-B;double rad=Angle(A-B,v1);v1=Rotate(v1,rad/3.0);Vector v2=B-C;rad=Angle(A-C,v2);v2=Rotate(v2,-rad/3.0);// printf("%.6lf %.6lf\n",v2.x,v2.y);Point mm=Getlineintersectoin(B,v1,C,v2);return mm;// printf("%.6lf %.6lf\n",mm.x,mm.y);
}
int main()
{int T;Point A,B,C,D,E,F;scanf("%d",&T);while(T--){scanf("%lf%lf%lf%lf%lf%lf",&A.x,&A.y,&B.x,&B.y,&C.x,&C.y);D=getD(A,B,C);E=getD(B,C,A);F=getD(C,A,B);printf("%.6lf %.6lf %.6lf %.6lf %.6lf %.6lf\n",D.x,D.y,E.x,E.y,F.x,F.y);}return 0;
}