%0 Journal Article %A Milan Janjić %T Geometrical definition of Pi and its approximations by nested radicals %J The Teaching of Mathematics %D 2008 %P 25 %V 2008 %N 20 %I mathdoc %U https://geodesic-test.mathdoc.fr/item/TM_2008__2008_20_256864/ %G en %F TM_2008__2008_20_256864