Section PerpBisect_3.
Context `{TnEQD:Tarski_neutral_dimensionless_with_decidable_point_equality}.

Lemma cong_cop2_perp_bisect_col : forall A B C D E,
Coplanar A C D E ->
Coplanar B C D E ->
Cong C D C E ->
Perp_bisect A B D E ->
Col A B C.