#include <iostream>
#include <cmath>
#include <iomanip>

using namespace std;

class point{
public:
  double x;
  double y;
};


double R2D(double r){
  return r*180/M_PI;
}

double D2R(double d){
  return d*M_PI/180;
}


int main(){
  int w,l;
  cin >> w >> l;
    double r;
    cin >> r;
    point ball1;
    cin >> ball1.x >> ball1.y;
    point ball2;
    cin >> ball2.x >> ball2.y;
    point ball3;
    cin >> ball3.x >> ball3.y;
    double h;
    cin >> h;

    bool possible = true;
    // find conditions that can't happen
    if(ball1.x < ball2.x)
	 possible = false;

    if(ball1.y > ball2.y)
      possible = false;
    if(ball1.x > ball3.x)
      possible = false;
    if(ball1.y > ball3.y)
      possible = false;

   

    double ball2_theta = M_PI - atan((l - ball2.y)/ball2.x);
    //    cout << "ball 2 needs to be at angle " << R2D(ball2_theta) << endl;
    double cue2_impact_angle = M_PI-ball2_theta;
    //  cout << "angle from left edge: " << R2D(cue2_impact_angle) << endl;

    point cue2_impact;
    cue2_impact.x = ball2.x+2*r*cos(cue2_impact_angle);
    cue2_impact.y = ball2.y-2*r*sin(cue2_impact_angle);
    //   cout << "Cue hits ball 2 at (" << cue2_impact.x << "," << cue2_impact.y << ")" << endl;
    
    double ball3_theta = atan((l-ball3.y)/(w-ball3.x));
    //   cout << "Ball 3 needs to be going at angle " << R2D(ball3_theta) << endl;
    point ball1_impact;
    ball1_impact.x = ball3.x - 2*r*cos(ball3_theta);
    ball1_impact.y = ball3.y - 2*r*sin(ball3_theta);
    //   cout << "Ball 1 hits ball 3 at (" << ball1_impact.x << "," << 
    //  ball1_impact.y << ")" << endl;
    double ball1_theta = atan((ball1_impact.y-ball1.y)/(ball1_impact.x-ball1.x));
    //  cout << "Ball 1 hits ball 3 at angle " << R2D(ball1_theta) << endl;
    point cue1_impact;
    cue1_impact.x = ball1.x-2*r*cos(ball1_theta);
    cue1_impact.y = ball1.y-2*r*sin(ball1_theta);
    
    //  cout << "Cue hits ball 1 at (" << cue1_impact.x << "," << cue1_impact.y << ")" << endl;
    
    double cue_dx = cue1_impact.x - cue2_impact.x;
    double cue_dy = cue2_impact.y-cue1_impact.y;
    
    //  cout << "Cue travels (" << cue_dx << ", " << cue_dy << ") between balls 1 and 2 " << endl;
    double cue_1_2_impact_angle = M_PI-atan(cue_dy/cue_dx);
    //   cout << "Cue comes off of ball 1 at angle " << R2D(cue_1_2_impact_angle) << endl;
  
    double normal_angle = ball1_theta+M_PI/2;
    double part1 =  cue_1_2_impact_angle- normal_angle;
    double part2 = M_PI-normal_angle;
    double theta = M_PI-part1-part2;
   
    // cout << "Cue comes into ball 1 at angle " << R2D(theta) << endl;
    double table_x = (cue1_impact.y-h)/ tan(M_PI-theta);
    table_x = table_x + cue1_impact.x;

    if(table_x < r || table_x > w-r)
      possible = false;

     if(possible){
       theta = theta * 180 / M_PI;
       cout << fixed << setprecision(2) << table_x << " " << theta << endl;
     }
        else
          cout << "impossible" << endl;
  return 0;
}