%0 Journal Article %A Jordan Tabov %A Asen Velchev %A Rayna Alashka %A Sevdalin Tsvetanov %T An application of the quadrilateral's geometry in solving competitive planimetric problems %J The Teaching of Mathematics %D 2023 %P 46 %V XXVI %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.57016/TM-GKZB9621/ %R 10.57016/TM-GKZB9621 %G en %F 10_57016_TM_GKZB9621