static void Main(string[] args) { Triangles triangle1 = new Triangles("Triangle1", 5, 6); triangle1.Display(); IShape triangle2 = new CornersTriangle("Triange2", 7, 8.7, 45); triangle2.Display(); CornersTriangle triangle3 = (CornersTriangle)triangle2; triangle3.Name = "Triangle3"; triangle3.Corner = 63; triangle3.Display(); HeronaTriangle htr = new HeronaTriangle("Triangle4", 8, 9, 4); htr.Display(); Circle circle = new Circle("Circle", 6); circle.Display(); Rhomb rm = new Rhomb("Rhomb", 23, 34); rm.Display(); IShape rm2 = new Rhomb { Name = "Rhomb1", FirstSide = 12, SecondSide = 12 }; Console.Read(); }