bn:15912393n
Noun Concept
Categories: Symmetry
EN
cyclic symmetries  Cyclic symmetry in three dimensions  pyramidal symmetry
EN
In three dimensional geometry, there are four infinite series of point groups in three dimensions with n-fold rotational or reflectional symmetry about one axis that does not change the object. Wikipedia
Definitions
Sources
EN
In three dimensional geometry, there are four infinite series of point groups in three dimensions with n-fold rotational or reflectional symmetry about one axis that does not change the object. Wikipedia