static void Main(string[] args)
{
Console.WriteLine("Hello World");
//criando objeto da classe Retangulo
Retangulo r1 = new Retangulo();
Console.WriteLine(r1.getBasis());
r1.setBasis(25.0);
Console.WriteLine(r1.getBasis());
Console.WriteLine(r1.getAltura());
Console.WriteLine();
Retangulo r2 = new Retangulo(15.0, 25.0);
Console.WriteLine(r2.getBasis());
Console.WriteLine(r2.getAltura());
Console.WriteLine();
Console.WriteLine(r1.Area());
Console.WriteLine(r2.Area());
Console.WriteLine();
Console.WriteLine(r1.Perimetro());
Console.WriteLine(r2.Perimetro());
Console.WriteLine();
Console.ReadLine();
}
