//---------- Klassenmethoden---------------
 public static int Bigger(GeometricObject object1, GeometricObject object2)
 {
     if (object1 == null || object2 == null) return 0;
     if (object1 == null) return -1;
     if (object2 == null) return 1;
     if (object1.GetArea() > object2.GetArea()) return 1;
     if (object1.GetArea() < object2.GetArea()) return -1;
     return 0;
 }
 public virtual int Bigger(GeometricObject @object)
 {
     if (@object == null || GetArea() > @object.GetArea()) return 1;
     if (GetArea() < @object.GetArea()) return -1;
     return 0;
 }