﻿
namespace Shapes
{
    using System;
    public abstract class Shape
    {
        private double width;
        private double height;

        public double Width
        {
            get
            {
                return this.width;
            }
            set
            {
                this.width = value;
            }
        }

        public double Height
        {
            get
            {
                return this.height;
            }
            set
            {
                this.height = value;
            }
        }
        public abstract double CalculateSurface();
    }
}
