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For questions on dihedral groups, the group of symmetries of a regular polygon, including both rotations and reflections

In mathematics, a dihedral group, is the group of symmetries of a regular polygon, including both rotations and reflections. Dihedral groups are among the simplest examples of finite groups, and they play an important role in group theory, geometry, and chemistry. It is well-known and quite trivial to prove that a group generated by two involutions is a dihedral group.

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