September 2003
Mirror image and orientability
![Animated Klein bottle](/issue26/features/mathart/Mirror.gif)
If you move this face around the Möbius band, it returns as its mirror image (and upside-down). This means that the Möbius band is non-orientable.
If you move this face around the Möbius band, it returns as its mirror image (and upside-down). This means that the Möbius band is non-orientable.