dihedral group
preferred label: گروه دووجهی @fa
type: Concept
related: three reflections theorem

three reflections theorem
related: dihedral group
broader: neutral geometry
preferred label: قضیه سه بازتاب @fa
type: Concept

neutral geometry
preferred label: هندسه نتاری @fa
type: Concept
narrower: three reflections theorem