Saipnazarov Shaylovbek Aktamovich, Saidova Munirajon Yuldashevna and Djumanazarova Zamira Kojabayevna 2021. Some vector equality and application to the solution of geometric problems. Middle European Scientific Bulletin. 11, (Apr. 2021). DOI:https://doi.org/10.47494/mesb.2021.11.491.