FITRIANTI, Yuli. Pembelajaran Konsep Sudut Keliling pada Siswa Kelas VIII. Jurnal Pendidikan Matematika RAFA, [S. l.], v. 8, n. 1, p. 9–24, 2022. DOI: 10.19109/jpmrafa.v8i1.8809. Disponível em: https://jurnal.radenfatah.ac.id/index.php/jpmrafa/article/view/8809.. Acesso em: 19 apr. 2025.