MOYER, . O. Exploring Hyperbolic Geometry (Part 2): Angles and Triangles. Ohio Journal of School Mathematics, [S. l.], v. 99, n. 1, p. 38–49, 2025. Disponível em: http://voyager.janeway.systems:9999/index.php/OJSM/article/view/10398. Acesso em: 7 nov. 2026.