HETMANENKO, Lyudmyla. THE TRINITY FORMULA AS A RESULT OF EMOTIONAL SEARCH FOR NEW GEOMETRY FORMULAS. Physical and Mathematical Education, Україна, v. 38, n. 4, p. 31–35, 2023. DOI: 10.31110/2413-1571-2023-038-4-004. Disponível em: https://www.fmo-journal.org/index.php/fmo/article/view/265. Acesso em: 6 jun. 2026.