Ltac local_uniformize_signed_areas := Runiformize_signed_areas.(*
Ltac local_uniformize_signed_areas := uniformize_signed_areas.
*)

Ltac local_basic_simpl := Rbasic_simpl.Ltac local_uniformize_signed_areas4 := uniformize_signed_areas4.

Lemma test172 : forall A B C, S A B C <> 0 -> S C B A = 0 -> S B C A =0 -> 0=1.