%0 Journal Article %A Alessandro Fonda %T A generalization of the parallelogram law to higher dimensions %J Ars Mathematica Contemporanea %D 2019 %P 411-417 %V 16 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.26493/1855-3974.1704.34c/ %R 10.26493/1855-3974.1704.34c %G en %F 10_26493_1855_3974_1704_34c