Require Export GeoCoq.Elements.OriginalProofs.lemma_ray1.
Require Export GeoCoq.Elements.OriginalProofs.lemma_raystrict.
Section Euclid.
Context `{Ax:euclidean_neutral_ruler_compass}.

Lemma lemma_tworays :
forall A B C,
Out A B C -> Out B A C ->
BetS A C B.