The length of the diagonal less congruent diamonds or the congruent rhomboids that divides a polygon data ordered concave ( m, mm, n ) m greater than n, n greater or equal to one, is equal to the length of the side less congruent rectangles or the congruent rhomboids that divides a rectangle or a diamond shape of order ( m, 41 m; m greater or equal to two respectively and through them mentally is supposed that is built the polygons concave ordered.
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