Question
Let R be any rotation and F be any reflection in the dihedral group Dn where...
Let R be any rotation and F be any reflection in the dihedral group Dn where n>= 3.
a) Prove that FRF=R^-1
b) Prove that if FR=RF then R=R0 or R=R180
c) Prove that Dn is not Abelian
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