(** This is SSS congruence. *)

(** This is SSA congruence with a restriction *)
Lemma l11_52 : forall A B C A' B' C',
CongA A B C A' B' C' -> Cong A C A' C' -> Cong B C B' C' -> Le B C A C ->
Cong B A B' A' /\ CongA B A C B' A' C' /\ CongA B C A B' C' A'.