Section Archimedes_for_angles.
Context `{TnEQD:Tarski_neutral_dimensionless_with_decidable_point_equality}.

Lemma grada2_sams_suma__grada : forall A B C D E F G H I K L M,
GradA A B C D E F -> GradA A B C G H I ->
SAMS D E F G H I -> SumA D E F G H I K L M ->
GradA A B C K L M.