- 3Dspace geometryThe eleven nets of cubeSurface area of solids by Pappus theoremVolume of solids by Pappus theoremFortified castlecartonFunny solids for childrenGaussian curvature surfaceVolume of a barrelTonnage and volume of a boat holdEscher cubeStellation of a truncated octahedronConics in the conePossible gearsPossible gears?Area of a sphere by decomposition into spherical sectorsDaily math (1) : the surface to paintNet of the coneCube vs OctahedronIcosaehedron vs DodecahedronSteinmetz solid for cylindresThe straight line on the cylinder ??Solids and volumes of revolution (rotation about y_axis)Solides associesVolume of the pyramid explained by the cubeUsuals forms and solids : solids in architectureSphere,cone and cylinder by CavalieriProportionality of volumesConicsMr Bezier's pottery workshopConicsUnit cube and its diagonalsNet of the cone (interactive applet)Why are these columns in the conversion tables?Various 3D SurfacesWhat is the path of a folded/unfolded cube?Same volume for different glass shapes but different heightsVolume of a usual container (interactive applet)Truncated pyramids and cones