#include<bits/stdc++.h> using namespace std; struct point { double x, y; point(double A, double B) { x = A, y = B; } point() = default; }; struct line { point point_A, point_B; line(point A, point B) { point_A = A, point_B = B; } line() = default; }; point findMeetingPoint(line line_A, line li...