Section universal_posidonius_postulate_perpendicular_transversal_postulate.
Context `{TnEQD:Tarski_neutral_dimensionless_with_decidable_point_equality}.

(* Specifications: *)
Lemma universal_posidonius_postulate__perpendicular_transversal_postulate :
universal_posidonius_postulate -> perpendicular_transversal_postulate.