Section Gupta_inspired_variant_of_Tarski_neutral_dimensionless_to_Tarski_neutral_dimensionless.
Context `{ITnEQD:Gupta_inspired_variant_of_Tarski_neutral_dimensionless_with_decidable_point_equality}.

Lemma g2_8 : forall A B C D,
BetG A B C -> BetG A B D -> CongG B C B D -> A <> B -> C = D.