# Superfície não orientável - Bordo trifólio

- By: Object made by MockUp Company, photo by Rodrigo.Argenton
- Date: 2017-02-16
- Classification: Photograph
- Museum: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Superf%C3%ADcie_n%C3%A3o_orient%C3%A1vel_-_Bordo_trif%C3%B3lio.jpg)
- Rights: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0)
- Picture: https://invisiblenetwork.ai/thumbs/commons/thumb/0/00/Superf%C3%ADcie_n%C3%A3o_orient%C3%A1vel_-_Bordo_trif%C3%B3lio.jpg/1920px-Superf%C3%ADcie_n%C3%A3o_orient%C3%A1vel_-_Bordo_trif%C3%B3lio.jpg
- Who can see it: Teens profiles and older (museums give no ratings; placed by Invisible Network from the museum's own words)

Mathematical non-orientable surface which the boundaries are the trefoil knot in different angles, object is part of the Matemateca (IME/USP) collection.