The length of the diagonal greater of them diamonds congruent or of them rhomboid consistent of a polygon concave ordered of dato ( m, r, n ) m greater that r, r greater that n, n greater or equal that one, is equal to the longitude of the side most of them rectangles congruent or of them rhomboid congruent in that is divided a rectangle or a rhomboid of order ( m, r ) m more that r, r greater or equal to two respectively, and through this, mentally is supposed that is built the polygons concave ordered.
