1 #include<stdio.h>
 2 #include<math.h>
 3 #include<complex>
 4 using namespace std;
 5 struct Point {
 6     double x, y;
 7     Point(double x = 0, double y = 0) : x(x) , y(y) {}
 8 };
 9 typedef Point Vector;
10 Vector operator + (Vector A, Vector B) {    return Vector(A.x + B.x, A.y + B.y);}
11 Vector operator - (Point A, Point B)   {    return Vector(A.x - B.x, A.y - B.y);}
12 Vector operator * (Vector A, double P) {    return Vector(A.x * P, A.y * P);}
13 Vector operator / (Vector A, double P) {    return Vector(A.x / P, A.y / P);}
14 bool operator < (const Point &a, const Point &b) {
15     return a.x < b.x || (a.x == b.x && a.y < b.y);
16 }
17 const double eps = 1e-10;
18 double fabs(double x) {
19     return x > 0 ? x : -x;
20 }
21 int dcmp(double x) {
22     if(fabs(x) < eps) return 0;
23     else return x < 0 ? -1 : 1;
24 }
25 bool operator == (const Point &a, const Point &b) {
26     return dcmp(a.x - b.x) == 0 && dcmp(a.y - b.y) == 0;
27 }
28 double Dot(Vector A ,Vector B) { return A.x * B.x + A.y * B.y;}//点积
29 double Length(Vector A) { return sqrt(Dot(A, A));} //计算向量长度
30 double Angle(Vector A, Vector B) { return acos(Dot(A, B) / Length(A) / Length(B));}// 计算向量夹角
31 double Cross(Vector A, Vector B) { return A.x * B.y - A.y * B.x; }
32 double Area2(Point A, Point B, Point C) { return Cross(B - A, C - A);}
33 Vector Rotate(Vector A, double rad) {
34     return Vector(A.x * cos(rad) - A.y * sin(rad), A.x * sin(rad) + A.y * cos(rad));
35 }
36 Vector Normal(Vector A) {
37     double L = Length(A);
38     return Vector(-A.y / L, A.x / L);
39 }
40 Point GetlineIntersection(Point P, Vector v, Point Q, Vector w) {
41     Vector u = P - Q;
42     double t = Cross(w, u) / Cross(v, w);
43     return P + v * t;
44 }
45 double DistanceToLine(Point P, Point A, Point B) {
46     Vector v1 = B - A, v2 = P - A;
47     return fabs(Cross(v1, v2) / Length(v1));
48 }
49 double DistanceToSegment(Point P, Point A, Point B) {
50     if(A == B) return Length(P - A);
51     Vector v1 = B - A, v2 = P - A, v3 = P - B;
52     if(dcmp(Dot(v1, v2) < 0)) return Length(v2);
53     else if(dcmp(Dot(v1, v2) < 0)) return Length(v3);
54     else return fabs(Cross(v1,v2)) / Length(v1);
55 }
56 Point GetLineProjection(Point P, Point A, Point B) {
57     Vector v = B - A;
58     return A + v * (Dot(v, P - A)) / Dot(v, v);
59 }
60 bool SegmentProperIntersection(Point a1, Point a2, Point b1, Point b2) {
61     double c1 = Cross(a2 - a1, b1 - a1), c2 = Cross(a2 - a1, b2 - a1),
62            c3 = Cross(b2 - b1, a1 - b1), c4 = Cross(b2 - b1, a2 - b1);
63     return dcmp(c1) * dcmp(c2) < 0 && dcmp(c3) * dcmp(c4) < 0;
64 }
65 bool Onsegment(Point p, Point a1, Point a2) {
66     return dcmp(Cross(a1 - p, a2 - p) == 0 && dcmp(Dot(a1 - p, a2 - p))) < 0;
67 }
68 double ConvexPolygonArea(Point * p, int n) {
69     double area = 0;
70     for(int i = 1; i < n - 1; ++i)
71         area += Cross(p[i] - p[0], p[i + 1] - p[0]);
72     return fabs(area / 2);
73 }
74 Point GetPoint(Point A, Point B, Point C) {
75     Vector v1 = C - B;
76     double a1 = Angle(v1, A - B);
77     v1 = Rotate(v1, a1 / 3);
78 
79     Vector v2 = B - C;
80     double a2 = Angle(v2, A - C);
81     v2 = Rotate(v2, -a2 / 3);
82 
83     return GetlineIntersection(B, v1, C, v2);
84 }
85 int main() {
86     int t;
87     Point A, B, C, D, E, F;
88     scanf("%d", &t);
89     while(t--) {
90         scanf("%lf%lf%lf%lf%lf%lf", &A.x, &A.y, &B.x, &B.y, &C.x, &C.y);
91         D = GetPoint(A, B, C);
92         E = GetPoint(B, C, A);
93         F = GetPoint(C, A, B);
94         printf("%.6f %.6f %.6f %.6f %.6f %.6f\n", D.x, D.y, E.x, E.y, F.x, F.y);
95     }
96     return 0;
97 }