Arjawa, A. A. G. P., .-. Sariyasa, and G. Suweken. “Developing Instructional Multimedia for Teaching Line and Angle to the Seventh Grade Students of Junior High School”. International Research Journal of Engineering, IT & Scientific Research, vol. 3, no. 5, Sept. 2017, pp. 66-75, https://sloap.org/journals/index.php/irjeis/article/view/577.