%0 Journal Article %A A. N. Zachos %T A Property of the Fermat-Torricelli Point for Tetrahedra and a new Characterization for Isosceles Tetrahedra %J Journal for geometry and graphics %D 2023 %P 187-193 %V 27 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/JGG_2023_27_2_JGG_2023_27_2_a6/ %F JGG_2023_27_2_JGG_2023_27_2_a6