Theorem equivalent_postulates_without_decidability_of_intersection_of_lines_bis : all_equiv (alternative_strong_parallel_postulate:: alternative_proclus_postulate:: euclid_5:: euclid_s_parallel_postulate:: inverse_projection_postulate:: proclus_postulate:: strong_parallel_postulate:: tarski_s_parallel_postulate:: triangle_circumscription_principle:: nil).