Just like the Cartesian bear, but with a change of coordinates.
Picture below :
![The Polar Bear - Like the Cartesian Bear, but with transformed coordinates](http://www.dr-mikes-math-games-for-kids.com/blog/wp-content/files/2013/02/PolarBearCartesianBear-1200px-300x240.jpeg)
Hat tip to Professor Ian Stewart for the joke.If you like it, get it on a shirt or mug :
![Polar Bear Cartesian Bear](http://rlv.zcache.com/polar_bear_cartesian_bear-r5a12e31686084fea8b880d7db9a83d99_vj7q2_325.jpg?bg=0xffffff)
Polar Bear ~ Cartesian Bear
Polar Bear image is public domain, sourced from the Wikimedia Commons, feel free to copy the poster unchanged for non-commercial purposes. (Creative Commons Attribution Non Commercial).