Ramadhona R, Siregar NAR, Alpindo O. The Practicality of Plane and Space Geometry Textbook as Teaching Materials in Mathematics Education Department of UMRAH. jg [Internet]. 2023Jun.30 [cited 2024Dec.19];8(1):65-73. Available from: https://ojs.umrah.ac.id/index.php/gantang/article/view/5658