Require Export GeoCoq.Elements.OriginalProofs.lemma_30helper.
Require Export GeoCoq.Elements.OriginalProofs.lemma_crossimpliesopposite.
Require Export GeoCoq.Elements.OriginalProofs.proposition_30A.
Section Euclid.
Context `{Ax:euclidean_euclidean}.

Lemma parnotmeet: forall A B C D,
Par A B C D -> ~ Meet A B C D.