Kristiarta YAK, Wahyu Setyaningrum, Marsigit. Problem Solving Approach Based on Blended Learning on Trigonometric Comparison of Right Triangles on Mathematical Concept Understanding Ability. j. lesson learning stud. [Internet]. 7 Desember 2023 [dikutip 18 Mei 2024];6(3):516-2. Tersedia pada: https://ejournal.undiksha.ac.id/index.php/JLLS/article/view/67275