APRIZAL BINTARA, Idvan; PRABAWANTO, Sufyani. Learning Obstacles of Junior High School Students on the Concept of Triangle. KnE Social Sciences, [S. l.], v. 9, n. 13, p. 500–509, 2024. DOI: 10.18502/kss.v9i13.15952. Disponível em: http://thrillriftranks.com/index.php/KnE-Social/article/view/15952. Acesso em: 6 feb. 2025.