Dihedral groups are strongly ambivalent

Statement
All fact about::dihedral groups are strongly ambivalent. In other words, every element of a dihedral group is a fact about::strongly real element: it is either the identity element, or an involution, or the product of two involutions.

Related facts

 * Dihedral groups are ambivalent
 * Classification of rational dihedral groups
 * Generalized dihedral groups are strongly ambivalent
 * Generalized dihedral groups are ambivalent
 * Classification of rational generalized dihedral groups
 * Symmetric groups are strongly ambivalent