#include<stdio.h>#include<string.h>#include<math.h>#define zero 1e-8double x3, y3, x4, y4, x5, y5;int dcmp(double x){ return fabs(x) < zero ? 0 : (x < 0 ? -1 : 1);}void solve(){ double x, y, x1, y1, x2, y2, k1, k2; if(dcmp(y3 - y4) == 0) { k2 = (x4 - x5) / (y5 - y4); x = x5; y = k2 * (x - x3) + y3; } else { if(dcmp(y4 - y5) == 0) { k1 = (x3 - x4) / (y4 - y3); x = x3; y = k1 * (x - x5) + y5; } else { k1 = (x3 - x4) / (y4 - y3); k2 = (x4 - x5) / (y5 - y4); x = (k1 * x5 - k2 * x3 + y3 - y5) / (k1 - k2); y = k1 * (x - x5) + y5; } } printf("%.4lf %.4lfn", x + zero, y + zero);}int main(){ int t; scanf("%d", &t); while(t --) { scanf("%lf%lf%lf%lf%lf%lf", &x3, &y3, &x4, &y4, &x5, &y5); solve(); } return 0;}
