public class NEck extends Grundflaeche
                  implements Quadrierbar, Polygon {

    private int n;
    private int laenge;

    public NEck(int n, int laenge) {
        this.n = n;
        this.laenge = laenge;
    }
    
    public int getN() {
        return n;
    }
    
    public int getLaenge() {
        return laenge;
    }

    @Override
    public double umfang() {
        return n * laenge;
    }

    @Override
    public double flaeche() {
        return (n*Math.pow(laenge, 2)) / (4*Math.tan(Math.PI/n));
    }

    @Override
    public boolean istQuadrat() {
        return n == 4;
    }

    @Override
    public Quadrat zuQuadrat() {
        if (!this.istQuadrat())
            return null;
        return new Quadrat(laenge);
    }
    
    @Override
    public int getEckenAnzahl() {
        return n;
    }

    @Override
    public String toString() {
        return "NEck{n=" + n + "; laenge=" + laenge + "; " + super.toString() + "}";
    }

}