Require Export B3_Alignes_Prop.
Section LINE_DEFINITIONS.

(* Specifications: *)
Lemma FLineA : forall F : Figure, forall D : Line F,
F (LineA F D).
Lemma FLineB : forall F : Figure, forall D : Line F,
F (LineB F D).
Lemma LineSuperimposedAB : forall F : Figure, forall D : Line F,
Superimposed F (Collinear (LineA F D) (LineB F D)).
Lemma FLineIn : forall F : Figure, forall D : Line F, forall A : Point,
F A -> Collinear (LineA F D) (LineB F D) A.
Lemma InFLine : forall F : Figure, forall D : Line F, forall A : Point,
Collinear (LineA F D) (LineB F D) A -> F A.