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The fundamental polygon of a Klein bottle. To construct the Klein bottle, join the sides with the same letter together so that the directions of the arrows match. (This cannot be done in three dimensions without the surface intersecting itself.)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 06:51, 10 November 2007 | ![]() | 313 × 313 (7 KB) | Ilmari Karonen | flip arrows to match Image:MöbiusStripAsSquare.svg |
15:13, 11 February 2006 | ![]() | 313 × 313 (7 KB) | Ilmari Karonen | The en:fundamental polygon of a en:projective plane. To construct the projective plane, join the sides with the same letter together so that the directions of the arrows match. (This cannot be done in three dimensions without the surface inter |