Sharifjanovna, Qozaqova Munojat. “Perpendicularity of a Straight Line to a Plane and a Plane to a Plane”. International Journal of Innovative Analyses and Emerging Technology 1, no. 5 (October 18, 2021): 70–71. Accessed May 20, 2024. https://openaccessjournals.eu/index.php/ijiaet/article/view/378.