%0 Journal Article %A Efstathios-Konstantinos Chrontsios-Garitsis %A Aimo Hinkkanen %T A geometric property of quadrilaterals %J Annales Fennici Mathematici %D 2024 %P 281–302-281–302 %V 49 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.54330/afm.145026/ %R 10.54330/afm.145026 %G en %F AFM_2024_49_1_a13