Require Export GeoCoq.Elements.OriginalProofs.lemma_collinear2.
Require Export GeoCoq.Elements.OriginalProofs.lemma_collinear1.
Section Euclid.
Context `{Ax1:euclidean_neutral}.

Lemma lemma_collinearorder :
forall A B C,
Col A B C ->
Col B A C /\ Col B C A /\ Col C A B /\ Col A C B /\ Col C B A.