forma igual uno 21
It is the one that contains all polygons sorted concave data ( m, mm, n ) m greater that n, n greater or equal to one, that is divided in square congruent or rectangles congruent, also contains to all them parallelograms divided in parallelograms congruent of order ( m, m ) m greater than or equal to two, and only if, they are squares divided into congruent squares or rhombuses divided in congruent Rhombus and through them is supposed that the ordered concave polygons are built is equal one respectively.