Require Export GeoCoq.Elements.OriginalProofs.lemma_collinear5.
Section Euclid.
Context `{Ax:euclidean_neutral_ruler_compass}.

(* Specifications: *)
Lemma lemma_NChelper :
forall A B C P Q,
nCol A B C -> Col A B P -> Col A B Q -> neq P Q ->
nCol P Q C.