(* Lemma axiom_inter_dec : forall l m, (exists P, IncidentL P l /\ IncidentL P m) \/ ~ (exists P, IncidentL P l /\ IncidentL P m). *)

(* Specifications: *)
Lemma axiom_conga_refl : forall A B C, ~ Col_H A B C -> CongA A B C A B C.
End T.