The question of Symmetry-Asymmetry is a part of Codis: the partition of
some set A is defined by the relation of equivalence applied on it, where the other
relation (criterion) results in a different partition. In the same way,
talking about Symmetry-Asymmetry we first need to know the criterion:
the kind of symmetry. For example, a single logarithmic spiral is asymmetrical with
regard to isometries, but it is symmetrical when considered from the similarity symmetry
or conformal symmetry point of view.