Mamatov, J., Qahhorov, M. ., Parmanov, A. ., & Fayzullaev, S. . (2021). ABOUT THE MAIN TASKS OF TEACHING GEOMETRY AT THE SECONDARY SCHOOL. Журнал математики и информатики, 1(2). извлечено от https://matinfo.jdpu.uz/index.php/matinfo/article/view/1239