# Superfície - 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_-_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/5/50/Superf%C3%ADcie_-_bordo_trif%C3%B3lio.jpg/1920px-Superf%C3%ADcie_-_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)

Orientable surface whose boundary is the trefoil knot, Matemateca IME-USP collection.