shape.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Многоугольники
{
    public partial class Form1 : Form
    {   
        Graphics k;
        public Form1()
        {
            InitializeComponent();
            
            Shape[] array = {new Circle(2,3), new Triangle(2,5), new Square(0,0) };
            foreach (Shape i in array) i.Draw(k);

        }
    }
    public abstract class Shape
    {
        private int x, y;
        static int R;
        static Color lineC, fillC;
        public Shape(int xx, int yy)
        {
            x = xx;
            y = yy;
        }
        static Shape()
        {
            R = 0;
        }

        public virtual void Draw(Graphics g)
        {

        }
        public bool IsInside(int xx, int yy)
        {
            return true;
        }
    }

    public class Circle : Shape
    {
        public Circle(int xx, int yy) : base(xx,yy)
        {
        }
        public override void Draw(Graphics g)
        {
            
        }
    }

    public class Triangle : Shape
    {
        public Triangle(int xx, int yy) : base(xx, yy)
        {
        }
        public override void Draw(Graphics g)
        {

        }
    }

    public class Square : Shape
    {
        public Square(int xx, int yy) : base(xx, yy)
        {
        }
        public override void Draw(Graphics g)
        {

        }
    }
}