Require Export GeoCoq.Elements.OriginalProofs.lemma_crisscross.
Require Export GeoCoq.Elements.OriginalProofs.lemma_Playfairhelper.
Section Euclid.
Context `{Ax:euclidean_euclidean}.

(* Specifications: *)
Lemma lemma_Playfairhelper2 :
forall A B C D E,
Par A B C D -> Par A B C E -> CR A D B C ->
Col C D E.