dihedral group

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English

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the four-element dihedral group acting on the letter F

Etymology

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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.

Noun

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dihedral group (plural dihedral groups)

  1. (group theory) a group of symmetries of a regular polygon

Translations

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