The length of the diagonal of congruent squares or congruent rectangles of a polygon concave ordered data ( m, ) m greater than n, n greater or equal to two, is equal to the length of the sides of congruent squares or congruent rhombuses that divides a rectangle 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.
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