static public String maiorArea(Triangulo X, Triangulo Y)
        {
            double areaX = X.calculaArea();
            double areaY = Y.calculaArea();

            return(areaX > areaY?
                   X.Nome + ": " + areaX:
                   Y.Nome + ": " + areaY);
        }
        public String maiorArea(Triangulo triangulo)
        {
            double areaLocal  = this.calculaArea();
            double areaRemota = triangulo.calculaArea();

            return(areaLocal > areaRemota ?
                   this.Nome + ": " + areaLocal :
                   triangulo.Nome + ": " + areaRemota);
        }