Require Export GeoCoq.Tarski_dev.Ch10_line_reflexivity.
Section T10_1.
Context `{TnEQD:Tarski_neutral_dimensionless_with_decidable_point_equality}.

Lemma cong_cop_image__col : forall A B P P' X,
P <> P' -> Reflect P P' A B -> Cong P X P' X -> Coplanar A B P X ->
Col A B X.