A surface `` S '' in the Euclidean space R3 is orientable if a two-dimensional figure ( for example , ) can not be moved around the surface and back to where it started so that it looks like its own mirror image ( ) .
In the Euclidean space `` R3 '' is called orientable if a two-dimensional figure ( for example , ) can not be moved around the surface and back to where it started so that it looks like its own mirror image ( ) .