Require Export GeoCoq.Meta_theory.Decidability.equivalence_between_decidability_properties_of_basic_relations.
Section T5.
Context `{TnEQD:Tarski_neutral_dimensionless_with_decidable_point_equality}.

Lemma l5_12_b : forall A B C, Col A B C -> Le A B A C -> Le B C A C -> Bet A B C.