• symmetry ⪢⪢
http://qindex.info/i.php?x=11970

• symmetry ⪢⪢
http://qindex.info/i.php?x=21278

• symmetry ⪢⪢
#math
http://qindex.info/i.php?x=28249

• Symmetry and Transformations
-- symetry, transformation, translation, rotation, reflection, dilation, congruent
http://qindex.info/i.php?x=3848

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