of the same cube. In this sense it is a representation of the rotation group : in mechanics and geometry, the rotation group is the group of all rotations about the origin of 3-dimensional Euclidean space R 3 under the operation of composition . 16_Rotation_Ambiguous_Cubes_xp4.jpg   (medium) 16_Rotation_Ambiguous_Cubes_o10.jpg   (small) 16_Rotation_Ambiguous_Cubes.jpg   (large) Rendered