public class Rectangle
{
    private double _height;
    private double _width;

    public Rectangle()
    {

    }

    public Rectangle(double height, double width)
    {
        _height = height;
        _width = width;
    }

    public double calculateSquare()
    {
        return _height * _width;
    }

    public double calculatePerimeter()
    {
        return 2.0 * (_height + _width);
    }

    public bool areTheSame(Rectangle r1, Rectangle r2)
    {
        if ((r1._height == r2._height && r1._width == r2._width) || (r1._height == r2._width && r1._width == r2._height))
        {
            return true;
        }
        return false;
    }

    public bool isSquare()
    {
        return _height == _width;
    }
}