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NUR ISMIYATi, - and NURDIN ARSYAD, - and Alimuddin Tampa, - THE ABSTRACTION PROCESS OF CONSTRUCTING RELATION OF TRIANGLES IN TERMS OF CONCEPTUAL COGNITIVE STYLE OF TEMPO TO THE STUDENTS GRADE VIIITH SMP NEGERI 1 BALIKPAPAN. Proceedings of ISER 125th International Conference, Malacca, Malaysia, 3rd-4th May 2018.