The length of the diagonal less congruent diamonds or the congruent a polygon data 40 ordered concave rhomboid; m, ) m greater than n, n greater or equal to two, is equal to the length of the side less congruent rectangles or the congruent rhomboid in which a rectangle is divided and a diamond shape of order ( m, r ) m greater than r, r greater than or equal to two, respectively, and through them, mentally assumes that the ordered concave polygons were built.
