Uploaded February 2026 | Updated September 2026, 2 weeks ago

---

Equilateral, Isosceles and Scalene. Which do you rock, which do you marry, and which do you kill?

Here's the correct answer - but what do you think?

Dr Tom Crawford is the Public Engagement Lead and Departmental Lecturer in Mathematics at the Oxford University Department for Continuing Education. He is also a fellow at Robinson College, Cambridge. conted.ox.ac.uk/profiles/tom-crawford

For more maths content check out Tom's website tomrocksmaths.com

You can also follow Tom on Facebook, Twitter and Instagram @tomrocksmaths.
facebook.com/tomrocksmaths
twitter.com/tomrocksmaths
instagram.com/tomrocksmaths

Support Tom's work via Patreon here: patreon.com/tomrocksmaths