JCMB Temple
Japanese Sangaku for Edinburgh University​
About
Sangaku is a Japanese custom, dating back to the Edo period of Japanese history in the 17th Century, where tablets inscribed with mathematical problems would be hung in temples, as a gift to the Gods. Hundreds of examples still remain. The majority have been solved, but some as yet unsolved problems still remain.
Sangaku...
JCMB Temple...
As part of our project, we're turning JCMB into a temple in its own right. Only without the wooden tablets or worship this time round. You'll find a number of authentic Japanese geometric problems on posters and flyers around the building, some patronisingly easy and some that have baffled mathematicians for centuries. We've included a helpful chilli rating so you can tell which is which.

We'd like you to post any solutions (or failed attempts; we won't judge!) to our twitter feed (#JCMBTemple). Just take a photo of your working or if you've got the time to burn, write it up in LaTex! If you don't have twitter, email them to jcmbtemple@gmail.com and we'll add them to the feed and to this website. If you'd like to be credited, just add your name to your solution.

Every solution we receive, we'll post up with the associated problem on the Sangaku page of this website, so if you're stuck, see if somebody has beaten you to it!