Require Export GeoCoq.Tarski_dev.Ch05_bet_le.
Ltac eCol := eauto with col.
Section T6_1.
Context `{TnEQD:Tarski_neutral_dimensionless_with_decidable_point_equality}.

Lemma l6_11_uniqueness : forall A B C R X Y,
R<>A -> B<>C ->
Out A X R -> Cong A X B C ->
Out A Y R -> Cong A Y B C ->
X=Y.