Section T6_2.
Context `{TnEQD:Tarski_neutral_dimensionless_with_decidable_point_equality}.
(* Lemma t2_8 : forall A B C D E : Tpoint, Bet A B C -> Bet D B E -> Cong A B D B -> Cong B C B E -> Cong A E C D. *)

Lemma bet2_le2__le1245 : forall A B C A' B' C', Bet A B C -> Bet A' B' C' ->
Le B C B' C' -> Le A' C' A C -> Le A' B' A B.