($xa,$ya,$ta)=glob<>;
($x11,$y11)=glob<>;
($x12,$y12)=glob<>;
($x21,$y21)=glob<>;
($x22,$y22)=glob<>;

$pi=atan2(0,-1);

$d1y=$y12-$y11;
$d1x=$x12-$x11;
$a1=atan2($d1y,$d1x);
$d2y=$y22-$y21;
$d2x=$x22-$x21;
$a2=atan2($d2y,$d2x);

$t=$a1-$a2;

$s=sin($t);
$c=cos($t);
$x=$xa-$x21;
$y=$ya-$y21;
$xb=$x*$c-$y*$s+$x11;
$yb=$x*$s+$y*$c+$y11;

print $xb,$",$yb,$",$ta+$t*180/$pi;