![British Objects of Constant Width](http://blogs.scientificamerican.com/roots-of-unity/files/2014/07/constant-width-300x225.jpg)
Posts tagged geometry
British Objects of Constant Width
![British Objects of Constant Width](http://blogs.scientificamerican.com/roots-of-unity/files/2014/07/constant-width-300x225.jpg)
What’s the Deal with EuclidR...
![What’s the Deal with Euclid’s Fourth Postulate?](http://blogs.scientificamerican.com/roots-of-unity/files/2014/04/Pythagorean.jpg)
The Math Wars, Lewis Carroll Style
![The Math Wars, Lewis Carroll Style](http://blogs.scientificamerican.com/roots-of-unity/files/2014/03/lewis-carroll-203x300.jpg)
Chasing the Parallel Postulate
![Chasing the Parallel Postulate](http://blogs.scientificamerican.com/roots-of-unity/files/2014/02/rectangles-300x214.jpg)
Hyperbolic Quotes about Hyperbolic Ge...
![Hyperbolic Quotes about Hyperbolic Geometry](http://blogs.scientificamerican.com/roots-of-unity/files/2014/02/janos-bolyai.jpg)
How Much Pi Do You Need?
NASA scientists keep the space station operational with only 15 or 16 significant digits of pi, and the fundamental constants of the universe only require 32. Yet in 2006 Akira Haraguchi of Japan recited 100,000 digits of pi from memory in 16 ½ hours, stopping for five minutes every hour to replenish his strength with onigiri rice balls. And [...]
A Tasty Geometric Morsel Every Day
![A Tasty Geometric Morsel Every Day](http://blogs.ams.org/blogonmathblogs/files/2013/06/tectonic-activity.jpg)
Platonic Solids, Symmetry, and the Fo...
![Platonic Solids, Symmetry, and the Fourth Dimension](http://blogs.ams.org/blogonmathblogs/files/2013/06/600px-Icosidodecahedron-300x300.png)
Strumming the Lute of Pythagoras
![A drawing by Joseph Koch incorporates the Lute of Pythagoras into a portrait of Pythagoras himself. Image copyright Joseph Koch. Used with permission.](http://www.evelynjlamb.com/wp-content/uploads/2013/06/lute1.jpg)
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