Require Export C13_Angles_Supplem.
Unset Standard Proposition Elimination Names.
Section RIGHTANGLE.
Definition Vv : Point.

(* Specifications: *)
Lemma DistinctOoVv : Oo <> Vv.
Lemma ClockwiseUuOoVv : Clockwise Uu Oo Vv.
Lemma AngleUuOoVv : Angle Uu Oo Vv = Angle Ww Oo Vv.
Lemma DistVvUu : Distance Vv Uu = Distance Vv Ww.
Definition RightAS := Angle Uu Oo Vv.
Lemma DoubleRight : Supplementary RightAS RightAS.
End RIGHTANGLE.