postulado 93 poligonos concavos ordenados 32
All polygon concave ordered full divided in fact congruent Rhombus ( m, r, 2 ) greater than r m r greater than two, is separated into two rhomboids divided into congruent Rhombus of order ( m, r-1 ) and ( m-1, r ) if and only if m and r are not consecutive numbers.
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