Volume of the ball

                                                     

                                                         Click on the picture to launch

                                                            Download ggb file : here

Balloon beach

                                                

                                                Click on the picture to launch

                                       Download gbb file : here

Hemispheres

                                                       

                                                       Click on the picture to launch

                                                    Download ggb file : here

Stereographic coordinates

                                               

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                                           Download ggb file : here

Spherical sinusoides

                                               

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                                              Download ggb file : here

Spherical coordinates

                                                        

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                                                        Downlooad ggb file : here

Animated sphere

                                                          

                                                          Click on the picture to launch

                                                      Download ggb file : here

"Petanque" ball

                                                 

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                                                Download ggb file : here

Spherical enveloppes

                                             

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                                         Download ggb file : here

LOXODROMIE

                                                   

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                                                     Download the ggb file : here

The magic of symmetries

                                                       

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                                                  Click  on this link  to download:   here