The Rug Puzzle: how many triangles?

2018-04-04

[public] 141K views, 6.66K likes, 42.0 dislikes audio only

This video sponsored by ME. I mean: MATHS GEAR. Buy my book.

My original tweet that started the puzzle!

Owner of the rug is Andris Bērziņš: @BerzinsAndris

You can find it online here:

Download the smaller rug grid:

Hand working out was Calvin Stromwall: @Cstromw

The code was from Edward Mróz: @inzmru

Animation of the triangles moving around by Samuel Burch: @samisaburch

If you think you have an answer: tweet (@standupmaths), comment (standupmaths) or email (matt@standupmaths.com) me.

CORRECTIONS

- No mistakes spotted yet! Let me know if you see anything which is wrong or the puzzle needs additional clarification.

Thanks to my Patreon supporters who made this possible. Here is a random subset:

Kragar

Tim Nichols

Cubey

Dean Fantastic

Jonathan Anderson

Support my channel and I can make more videos. Plus I clearly need a new camera.

Music by Howard Carter

Design by Simon Wright

MATT PARKER: Stand-up Mathematician