Identifying the center of the dihedral group of order $2n$
72767
Center of the dihedral group with odd and even number of vertices
27507
Subgroups of Symmetric groups isomorphic to dihedral group
1990
Results for elements in Dihedral Groups: $x \notin \langle r\rangle  \Rightarrow rx = xr^{-1}$
74924
identity element of $(D_n ,\gcd)$
130706
Group presentations and the Dihedral Group
72048
Finding Sylow 2-subgroups of the dihedral group $D_n$
150854
Identifying a quotient group (NBHM-$2014$)
104513
Order of elements in $Z_n$
35660
Elements of order 2 in $D_{2n}$
112677
understanding the commutator of dihedral group
78283
Centralizer of a given element in $S_n$?
112165
Classification of groups of order 12
64305
Prove two reflections of lines through the origin generate a dihedral group.
145123
Prove a group generated by two involutions is dihedral
5089
An element of a group has the same order as its inverse
2794
Prove that if a group contains exactly one element of order 2, then that element is in the center of the group.
88221
Find the center of the group $\operatorname{GL}(n,\mathbb R)$ of invertible $n \times n$ matrices.