Require Export GeoCoq.Elements.OriginalProofs.lemma_parallelNC.
Require Export GeoCoq.Elements.OriginalProofs.lemma_parallelsymmetric.
Require Export GeoCoq.Elements.OriginalProofs.lemma_collinearparallel.
Require Export GeoCoq.Elements.OriginalProofs.proposition_29.
Section Euclid.
Context `{Ax:euclidean_euclidean}.

Lemma proposition_29C :
forall B D E G H,
Par G B H D -> OS B D G H -> BetS E G H ->
CongA E G B G H D /\ RT B G H G H D.