#include<iostream>
#include<cstdio>
#include<cstring>
#include<algorithm>
#include<cmath>
using namespace std;
const double eps = 1e-11;
struct Point {double x, y;Point(double x = 0, double y = 0) : x(x), y(y) {}
};
typedef Point Vector;int dcmp(double x) { if(fabs(x) < eps) return 0 ; else return x < 0 ? -1 : 1; }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  ) ; }
bool operator == (const Point &a, const Point &b) {return dcmp(a.x-b.x) == 0 && dcmp(a.y-b.y) == 0;
}double Dot (Vector A, Vector B) { return A.x*B.x + A.y*B.y; } ///点积
double Length (Vector A) { return sqrt(Dot(A,A)); }           ///向量长度
double Angle (Vector A, Vector B) { return acos(Dot(A,B) / Length(A) / Length(B)); }  ///角度
double Cross (Vector A, Vector B) { return A.x*B.y - A.y*B.x; }   ///X积
double Area2 (Point A, Point B, Point C) { return Cross(B-A,C-A); } ///面积
Vector Rotate (Vector A, double rad) {                              ///向量旋转 ， 逆时针，顺时针角度为-return Vector(A.x*cos(rad)-A.y*sin(rad), A.x*sin(rad) + A.y*cos(rad)) ;
}
Vector Normal (Vector A) { double L = Length(A);  return Vector(-A.y/L, A.x/L); }  ///单位向量
Point GetLineIntersection (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 GetPoint (Point A, Point B, Point C)
{Vector v = C-B;double rad = Angle(A-B,v);v = Rotate(v, rad/3);Vector vv =  B-C;rad = Angle(A-C,vv);vv = Rotate(vv, -rad/3);return GetLineIntersection(B,v, C,vv);
}int main()
{int t;scanf("%d",&t);while(t--){Point A, B, C, D, E, F;cin >> A.x >> A.y >> B.x >>B.y >> C.x >>C.y;D = GetPoint(A,B,C);E = GetPoint(B,C,A);F = GetPoint(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;
}