A1F9.cs

public class WindowManager
{
    private readonly IShapeFactory<Rectangle> _rectangleFactory;
    private readonly IShapeFactory<Cirlce> _CircleFactory;

    public WindowManager(IShapeFactory<Rectangle> rectangleFactory, IShapeFactory<Cirlce> CirlceFactory)
    {
        this._rectangleFactory = rectangleFactory ?? throw new ArgumentNullException(nameof(rectangleFactory));
        this._CircleFactory = CirlceFactory ?? throw new ArgumentNullException(nameof(CirlceFactory));
    }

    public void CreateRectangleWithUserParams(IShapeParameters parameters)
    {
        IShape rectangle = this._rectangleFactory.CreateShape(parameters);
        Console.WriteLine($"Factory: Rectangle created");
        Console.WriteLine($"Factory: El área del Rectangle es: {rectangle.getArea():0.00}");
    }
    public void CreateCircleWithUserParams(IShapeParameters parameters)
    {
        IShape Cirlce = this._CircleFactory.CreateShape(parameters);
        Console.WriteLine($"Factory: Cirlce created");
        Console.WriteLine($"Factory: El área de la ventana es: {Cirlce.getArea():0.00}");
    }        
}