Require Export GeoCoq.Tarski_dev.Ch13_6_Desargues_Hessenberg.
Section T14_sum.
Context `{T2D:Tarski_2D}.
Context `{TE:@Tarski_euclidean Tn TnEQD}.

Lemma Pj_exists : forall A B C,
exists D, Pj A B C D.