Handayani, D. P., & Hasibuan, E. K. (2026). Ethnomathematics in the Architecture of the Great Mosque of Medan: Geometric Concepts and Transformations. Kognitif: Jurnal Riset HOTS Pendidikan Matematika, 6(3), 1274–1294. https://doi.org/10.51574/kognitif.v6i3.5758