class Angle {

  public static Angle angleTroisPoints(IDirectPosition pt1,
      IDirectPosition pt2, IDirectPosition pt3) {
    Angle angle1 = new Angle(pt2, pt1);
    Angle angle2 = new Angle(pt2, pt3);
    Angle angle = Angle.ecarttrigo(angle1, angle2);
    return angle;
  }

  public  Angle();
  public  Angle(double valeur);
  public  Angle(IDirectPosition pt1, IDirectPosition pt2);

}