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Picture of the month
![](http://upload.wikimedia.org/wikipedia/commons/thumb/4/41/Fractal_tree_%28Plate_b_-_2%29.jpg/360px-Fractal_tree_%28Plate_b_-_2%29.jpg)
Credit: Solkoll
The Pythagoras tree is a plane fractal constructed from squares. It is named after Pythagoras because each triple of touching squares encloses a right triangle, in a configuration traditionally used to depict the Pythagorean theorem. This one has been specially coloured to give a more tree like and more 3 dimensional appearance.
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