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Yosafat Ardian Kristiarta, 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]. 2023 Dec. 7 [cited 2024 Jul. 1];6(3):516-2. Available from: https://ejournal.undiksha.ac.id/index.php/JLLS/article/view/67275