using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        //Instructions: Add classes that inherit from Shape for Rectangle, Triangle, and Circle then

        //  you will need to uncomment the lines that add the shapes (line 16, 19, 22).

        //  The signatures for the constructors for each shape are provided in comments below.

        //  If your constructor does not match you will have to modify the shapes.Add() statements.

        List<Shape> shapes = new List<Shape>();

        //Rectangle(Location origin, double width, double height)

        shapes.Add(new Rectangle(new Location(1, 1), 4, 5));

        //Triangle(Location origin, double theBase, double height, double sideALength, double sideBLength, double sideCLength)

        shapes.Add(new Triangle(new Location(1, 1), 3, 4, 3, 4, 5));

        //Circle(Location origin, double radius)

        shapes.Add(new Circle(new Location(1, 1), 2));  

        foreach (Shape s in shapes)

        {

            s.Draw();

            Console.WriteLine("Area = " + s.CalculateArea().ToString("F2"));

            Console.WriteLine("Perimeter = " + s.CalculatePerimeter().ToString("F2"));

            Console.WriteLine("");

        }

    }

}

​

public class Location

{

    public double X { get; set; }

    public double Y { get; set; }

    public Location() {}

    public Location(double x, double y)

    {

        X = x;

        Y = y;

    }

}

​

//not used. just an example of a derived class

public class Location3D : Location

{

    public double Z { get; set; }   

    public Location3D(double x, double y, double z) : base(x, y)

    {

        Z = z;

    }

}

​

public class Shape

{

    public Location Origin { get; set; }

    public double Width { get; set; }

    public double Height { get; set; }

    public virtual int NumberOfSides

    {

        get { return 1; }

    }

    public Shape() {}

    public Shape(Location origin, double width, double height)

    {

        Origin = origin;

        Width = width;

        Height = height;

    }

    public virtual double CalculateArea()

    {

        return 0;

    }

    public virtual double CalculatePerimeter()

    {

        return 0;

    }

    public virtual void Draw()

    {

        Console.WriteLine("Performing base class drawing tasks");

    }

}

​

//ADD YOUR CLASSES HERE

​

public class Rectangle : Shape

{

    public override int NumberOfSides

    {

        get { return 4; }

    }

    public Rectangle (Location origin, double width, double height) : base (origin, width, height)

    {

    }

    public override double CalculateArea()

    {

        return Width * Height;

    }

    public override double CalculatePerimeter()

    {

        return 2 * (Width + Height);

    }

    public override void Draw()

    {

        Console.WriteLine("Performing rectangle drawing tasks");

    }   

}

​

public class Triangle : Shape

{

    public override int NumberOfSides

    {

        get { return 3; }

    }

    public double Base

    {

        get { return Height; }

    }

    public double SideALength { get; set; }

    public double SideBLength { get; set; }

    public double SideCLength { get; set; }

    public Triangle (Location origin, double theBase, double height, double sideALength, double sideBLength, double sideCLength) 

        : base (origin, theBase, height)

    {

        SideALength = sideALength;

        SideBLength = sideBLength;

        SideCLength = sideCLength;

    }

    public override double CalculateArea()

    {

        return (Width * Height) / 2;

    }       

    public override double CalculatePerimeter()

    {

        return SideALength + SideBLength + SideCLength;

    }

    public override void Draw()

    {

        Console.WriteLine("Performing triangle drawing tasks");

    }

}

​

public class Circle : Shape

{

    public double Radius 

    {

        get { return Width / 2; }

    }

    public double Diameter

    {

        get { return Width; }

    }

    public Circle(Location origin, double radius) : base(origin, radius * 2, radius * 2) {}

    public override double CalculateArea()

    {

        return Math.PI * Math.Pow(Radius, 2);

    }

    public override double CalculatePerimeter()

    {

        return 2 * Math.PI * Radius;

    }

    public double CalculateCircumference()

    {

        return CalculatePerimeter();

    }

    public override void Draw()

    {

        Console.WriteLine("Performing circle drawing tasks");

    }

}