Extensions 1→N→G→Q→1 with N=C₉ and Q=C₂

Direct product G=N×Q with N=C₉ and Q=C₂

		d	ρ	Label	ID
C₁₈		18	1	C18	18,2

Semidirect products G=N:Q with N=C₉ and Q=C₂

extension	φ:Q→Aut N	d	ρ	Label	ID
C₉⋊C₂ = D₉	φ: C₂/C₁ → C₂ ⊆ Aut C₉	9	2+	C9:C2	18,1

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