Global Instance TG_to_T : Tarski_neutral_dimensionless.Global Instance TG_to_TID :
  Tarski_neutral_dimensionless_with_decidable_point_equality TG_to_T.

Lemma upper_dimT : forall A B C P Q, P <> Q -> CongG A P A Q -> CongG B P B Q -> CongG C P C Q -> (BetG A B C \/ BetG B C A \/ BetG C A B).