postulado 13, poligonos concavos ordenados 21
If in them polygons concave ordered, them sides of them lines broken have two lengths different, then the value of the indicator greater is given by the ratio between the length of the indicator greater and the length of them sides of greater length of them lines broken and the value of the indicator less is given by the ratio between the length of the indicator less and the length of them sides of less length of them lines broken.