using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

​

namespace Shapes_and_stuff

{

    class program

    {

​

​

        #region Program

        public static void Main(string[] args)

        {

            Triangle triangle = new Triangle(10, 5);

            Square square = new Square(70);

            Rectangle rectangle = new Rectangle(3, 6);

​

            Console.WriteLine("Triangle height = " + triangle.Height + ". Triangle baseline = " + 

                triangle.BaseLen + ". Triangle area = " + triangle.CalcArea() + ".");

​

            Console.WriteLine("Square side = " + square.Side + ". Square area = " + square.CalcArea() + ".");

​

            Console.WriteLine("Rectangle length = " + rectangle.Length + ". Rectangle width = " + 

                rectangle.Width + ". Rectangle area = " + rectangle.CalcArea() + ".");

​

            Console.ReadLine();

        }

        #endregion

    }

}

​

​