Require Export GeoCoq.Elements.OriginalProofs.lemma_8_7.
Require Export GeoCoq.Elements.OriginalProofs.lemma_NCdistinct.
Section Euclid.
Context `{Ax:euclidean_neutral_ruler_compass}.

(* Specifications: *)
Lemma lemma_rectangleparallelogram :
forall A B C D,
RE A B C D ->
PG A B C D.