static void Main(string[] args)
{
Shapes a = new Shapes(1, 2);
Shapes b = new Rectangle(4, 5);
Rectangle c = new Rectangle(7, 8);
Shapes d = new Triangle(2, 3, 4);
Shapes e = new Triangle(6, 7, 8);
Console.WriteLine(a.PrintOut());
Console.WriteLine(b.PrintOut());
Console.WriteLine(c.PrintOut());
Console.WriteLine(d.PrintOut());
Console.WriteLine(e.PrintOut());
Console.WriteLine("\nPress any key to close...");
Console.ReadKey();
}