%0 Journal Article %A E. Toledo Santos %A L. Lourenzoni %A A. L. Lima de Oliveira %T RISKO, an Educational Geometry Drawing Software With an Innovative Interface %J Journal for geometry and graphics %D 2006 %P 115-124 %V 10 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/JGG_2006_10_1_JGG_2006_10_1_a8/ %F JGG_2006_10_1_JGG_2006_10_1_a8