A Möbius strip has only one edge and one side. It is created by taking a strip of paper, giving it a half-twist, and then joining the ends together. If you trace the edge with a pencil, you will return to your starting point after traversing the entire length of both the "top" and "bottom" sides, which are in fact a single surface. | 𝑶𝒑𝒆𝒏𝑴𝒂𝒕𝒉𝑪𝒊𝒓𝒄𝒍𝒆

Learn and play with Möbius strips! http://www.whatdowedoallday.com/2014/07/math-art-mobius-strip.html | Quirky Momma

Our next featured demonstration is for all the topology aficionados! This demonstration displays a Möbius Strip, defined as a continuous closed surface with only one side, morphing into the ring-shaped torus. Learn more about the animation, contributed by Oliver Seipel, here: https://wolfr.am/R2nHq2aH | Wolfram Research