# Dyadic symmetry

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Dyadic symmetry | |
---|---|

Rank | 1 |

Space | Spherical |

Order | 2 |

Info | |

Coxeter diagram | |

Elements | |

Axes | 2 × I |

Related polytopes | |

Omnitruncate | Dyad |

**Dyadic symmetry**, also notated as **A _{1}**, is the only 1D Coxeter group. It coincides with

**B**and is thus part of both the A

_{1}_{n}and B

_{n}infinite families. It represents a single reflection symmetry and is the symmetry group of the dyad.

### Subgroups[edit | edit source]

- I (normal, maximal)

### Convex polytopes with A1 symmetry[edit | edit source]

- Dyad (regular)