http://www.learner.org/interactives/geometry/3d_prisms.html http://www.learner.org/interactives/geometry/3d_prisms.html Learner.org: Formas 3D: Prismas Exploring 3- shapes Interactives: Geometry 3D Shapes 3-D Shapes learner.org. learner.org. 3d-modeller hos learner.org http://www.learner.org/interactives/geometry/3d_prisms.html learner.org Geometry Interactive 3-D Shapes Interactives: Geometry 3D Shapes كليك كنيد Explore & Play with Prisms Learner.org: Formas tridimensionais: prismas [em inglês] prism كليك كنيد Annenberg Foundation: interactivos -- formas 3D -- prismas