static void Main()
{
Shape recti = new Rectangle(2, 5);
Console.WriteLine(recti.Surface());
ISurface[] surfaces = new ISurface[]
{
new Rectangle(5, 8.9),
new RightAngleTriangle(3.6, 2.3),
new Square(7),
new RightAngleTriangle(78, 90.6),
new Rectangle(56, 89.2)
};
foreach (ISurface item in surfaces)
{
Console.WriteLine(item.Surface());
}
}
