public class Triangulo extends Figura{

    private double base;
    private double altura;

    public Triangulo(double b, double a ){
	base=b;
	altura=a;
    }

    public Triangulo(){
	this(0,0);
    }

    public double base(){
	return base;
    }
    
    public double altura(){
	return altura;
    }
    public double area(){
	return base*altura/2;
    }

    public double perimetro(){
	return base + 2*hipotenusa();
    }

    public double hipotenusa(){
	return Math.sqrt(Math.pow(altura,2.0)+ Math.pow(base/2,2.0));
    }
}