postulado 20 paralelogramos 27
If ( m, r ) or ( r, m ) m greater than r, r greater than or equal to one is the order of a square divided into congruent rectangles or a diamond divided at rhomboid congruent, they are the only one, because the length of the sides of the square base or diamond base are divided n times r times the length of the sides of longer and shorter length of the congruent parallelograms.
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