public IDiagram MovedBy(int x, int y)
{
return(new Triangle(Pos0.MovedBy(x, y), Pos1.MovedBy(x, y), Pos2.MovedBy(x, y)));
}
public void MoveBy(int x, int y)
{
Pos0 = Pos0.MovedBy(x, y);
Pos1 = Pos1.MovedBy(x, y);
Pos2 = Pos2.MovedBy(x, y);
}