Require Export GeoCoq.Elements.OriginalProofs.lemma_3_7a.
Section Euclid.
Context `{Ax:euclidean_neutral_ruler_compass}.

(* Specifications: *)
Lemma lemma_3_7b :
forall A B C D,
BetS A B C -> BetS B C D ->
BetS A B D.
Lemma lemma_3_5b :
forall A B C D,
BetS A B D -> BetS B C D ->
BetS A C D.