@mscroggs Here are all the right-angled triangles for question 12 of the advent calendar.

. | ̄ ̄|
| 🎃 |
|__ |
(\_/) ||
(•ㅅ•) ||
/   づ

\[\sqrt{\sqrt{9} - \sqrt{8}} = \sqrt{2} - \sqrt{1}\]

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