- rectangular parallelepipedon
- <math> ■ Rechtflach n
English-german technical dictionary. 2013.
English-german technical dictionary. 2013.
Cyclic symmetries — This article deals with the four infinite series of point groups in three dimensions (n≥1) with n fold rotational symmetry about one axis (rotation by an angle of 360°/n does not change the object), and no other rotational symmetry (n=1 covers… … Wikipedia