Clase Formas Ejercicio C# - Curso de Programación C# (C Sharp)

using System;
namespace shapes
{
    class Circle : Shape
    {
        protected double radius;
    }
}

using System;
namespace shapes
{
    class Location
    {
        private double x, y;
    }
}

using System;
namespace shapes
{
    class Rectangle : Shape
    {
        protected double side1, side2;
    }
}

using System;
namespace shapes
{
    class Shape
    {
        protected Location c;

        public string ToString()
        {
            return "";
        }

        public double Area()
        {
            return 0.000;
        }

        public double Perimeter()
        {
            return 0.000;
        }
    }
}

using System;
namespace shapes
{
    class TestShape
    {
        static void Main(string[] args)
        {

        }
    }
}