dihedral group

短语

[计] 二面体群

词形变化

dihedral groups 复数 dihedral groups

释义与例句

n.
  1. 1.

    a group of symmetries of a regular polygon

    数学

词源

From di- and -hedron; so called because the polygon, when it can be reflected along certain axes of symmetry, has two faces: its upper side and its underside.

来源：wiktionary