1. #include<stdio.h>
2. #include<math.h>
3.  
4. double tool(int x1,int y1, int x2, int y2){
5.     return sqrt((x1-x2)*(x1-x2) + (y1-y2)*(y1-y2));
6. }
7.  
8. double masahat(double a,double b, double c){
9.     double p = (a+b+c)/2;
10.     return sqrt(p) * sqrt(p-a) * sqrt(p-b) * sqrt(p-c);
11. }
12. double max(double a, double b){
13.     if(a>b) return a;
14.     return b;
15. }
16.  
17. int main(){
18.     int n;
19.     scanf("%i",&n);
20.     double maxNesbat = -1;
21.     for(int i = 0; i < n; i++){
22.         int Ax,Ay,Bx,By,Cx,Cy,Dx,Dy;
23.         scanf("%i %i %i %i %i %i %i %i",&Ax,&Ay,&Bx,&By,&Cx,&Cy,&Dx,&Dy);
24.         double AB = tool(Ax,Ay,Bx,By);
25.         double BC = tool(Bx,By,Cx,Cy);
26.         double CD = tool(Cx,Cy,Dx,Dy);
27.         double AC = tool(Ax,Ay,Cx,Cy);
28.         double AD = tool(Ax,Ay,Dx,Dy);
29.  
30.         double masahat4zeli =  masahat(AB,BC,AC) + masahat(AC,AD,CD);
31.         double mohit = AB + BC + CD + AD;
32.  
33.         maxNesbat = max(maxNesbat, masahat4zeli/mohit);
34.  
35.         printf("%.2lf\n%.2lf\n",masahat4zeli,mohit);
36.     }
37.     printf("%.2lf\n",maxNesbat);
38. }