Section playfair_universal_posidonius_postulate.
Context `{TnEQD:Tarski_neutral_dimensionless_with_decidable_point_equality}.

(* Specifications: *)
Lemma playfair__universal_posidonius_postulate : playfair_s_postulate -> universal_posidonius_postulate.
End playfair_universal_posidonius_postulate.