[color=#c51414]Nastro di Möbius[/color] , [color=#0a971e]Bottiglia di Klein -BOUTEILLE DE KLEIN -Klein's bottle, - Kleinsche Flasche [/color] ,[color=#b20ea8]Toro, Toroide[/color], [color=#1551b5]Nodo[/color], [color=#c51414]Topologia[/color][b][/b][b][/b][b][/b][b][/b][b][/b]
