## 24 March 2018

### Dudeney's dissection

Henry Dudeney was an English author and mathematician who specialised in logic puzzles and mathematical games. He introduced the hinged dissection of a triangle into a square in his $1907$ book The Canterbury Puzzles. He exhibited a model in mahogany at the Royal Society of London in $1905$.

In the applet below, drag the slider in order to perform the dissection.