Require Export GeoCoq.Tarski_dev.Ch05_bet_le.
Ltac eCol := eauto with col.
Section T6_1.
Context `{TnEQD:Tarski_neutral_dimensionless_with_decidable_point_equality}.

Lemma bet_out_out_bet : forall A B C A' C',
Bet A B C -> Out B A A' -> Out B C C' -> Bet A' B C'.