public void normalize() {
		double d = Math.sqrt(A*A + B*B);
		A /= d;
		B /= d;
		C /= d;
	}
public void normalize() {
		double d = Math.sqrt(A*A + B*B);
		A /= d;
		B /= d;
		C /= d;
	}
public void normalize ( ) { double d = Math . sqrt ( A * A + B * B ) ; A /= d ; B /= d ; C /= d ; }
Ensures that A*A + B*B == 1
Ensures that A * A + B * B == 1