Require Export GeoCoq.Elements.OriginalProofs.lemma_equalanglestransitive.
Require Export GeoCoq.Elements.OriginalProofs.lemma_supplements.
Section Euclid.
Context `{Ax1:euclidean_neutral_ruler_compass}.

(* Specifications: *)
Lemma lemma_supplements2 :
forall A B C D E F J K L P Q R,
RT A B C P Q R -> CongA A B C J K L -> RT J K L D E F ->
CongA P Q R D E F /\ CongA D E F P Q R.