import java.util.Scanner;


public class euclid {
	static Scanner in=new Scanner(System.in);
	public static void main(String[] args) {
		double xa,ya,xb,yb,xc,yc,xd,yd,xe,ye,xf,yf;
		boolean notZero;
		do{
		notZero = false;
		xa = in.nextDouble(); if (xa!=0) notZero =true;
		ya = in.nextDouble(); if (ya!=0) notZero =true;
		xb = in.nextDouble(); if (xb!=0) notZero =true;
		yb = in.nextDouble(); if (yb!=0) notZero =true;
		xc = in.nextDouble(); if (xc!=0) notZero =true;
		yc = in.nextDouble(); if (yc!=0) notZero =true;
		xd = in.nextDouble(); if (xd!=0) notZero =true;
		yd = in.nextDouble(); if (yd!=0) notZero =true;
		xe = in.nextDouble(); if (xe!=0) notZero =true;
		ye = in.nextDouble(); if (ye!=0) notZero =true;
		xf = in.nextDouble(); if (xf!=0) notZero =true;
		yf = in.nextDouble(); if (yf!=0) notZero =true;
		if (notZero){
		double areaABC = Math.abs(xb*yc - xc*yb + xc*ya - xa*yc + xa*yb - xb*ya)/2;
		double areaDEF = Math.abs(xe*yf - xf*ye + xf*yd - xd*yf + xd*ye - xe*yd )/2;
		double k = areaDEF/(2*areaABC);
		double xh = k*xc + (1-k)*xa;
		double yh = k*yc + (1-k)*ya;
		double xg = xh + xb - xa;
		double yg = yh + yb - ya;
		//double xgRound = (double) Math.round(xg * 1000) / 1000;
		System.out.printf("%.3f ",xg);
		//System.out.print(xgRound+"  ");
		System.out.printf("%.3f ",yg);
		System.out.printf("%.3f ",xh);
		System.out.printf("%.3f\n",yh);
		}
		}while(notZero);
	}
}