<p>Drawing of an atypical Möbius strip: the strip is twisted by 540°, not 180°. By Toobaz (<a class="external free" href="https://it.wikipedia.org/wiki/Utente:Toobaz">http://it.wikipedia.org/wiki/Utente:Toobaz</a>)
</p>
For more information on how it was drawn, <a class="external free" href="https://it.wikipedia.org/wiki/Utente:Toobaz/Immagini">http://it.wikipedia.org/wiki/Utente:Toobaz/Immagini</a>.
No machine-readable author provided. <a href="//commons.wikimedia.org/wiki/User:Toobaz" title="User:Toobaz">Toobaz</a> assumed (based on copyright claims).
CC BY 2.5
No machine-readable source provided. Own work assumed (based on copyright claims).