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 segment_construction_2 :
forall A Q B C, A<>Q -> exists X, (Bet Q A X \/ Bet Q X A) /\ Cong Q X B C.