Section T10_1.
Context `{TnEQD:Tarski_neutral_dimensionless_with_decidable_point_equality}.

Lemma l10_16 : forall A B C A' B' P,
~ Col A B C -> ~ Col A' B' P -> Cong A B A' B' ->
exists C', Cong_3 A B C A' B' C' /\ OS  A' B' P C' .