## Posts Tagged ‘sphere’

### Measuring Tapes for Circles and Spheres

Posted by: **Dave Richeson** on April 21, 2016

A blog about math, puzzles, teaching, and academic technology

Posted by: **Dave Richeson** on April 21, 2016

Euler's Gem: The polyhedron formula and the birth of topology

Princeton University Press

2008

Euler's Gem Facebook page

Buy it:

Princeton University Press

Amazon

Princeton University Press

2008

Euler's Gem Facebook page

Buy it:

Princeton University Press

Amazon

- RT @stevenstrogatz: Elegant proof that the square root of 2 is irrational, by Stanley Tennenbaum divisbyzero.com/2009/10/06/ten… & see the interest… 1 day ago
- RT @rebecca_roache: Possible solution https://t.co/f1W8RxOOEH 2 days ago
- RT @fortnow: Quanta magazine declares Graph Isomorphism vanquished again. quantamagazine.org/20170114-graph… 4 days ago
- You should see the other guy! https://t.co/4HOKjtcAcB 4 days ago
- An icosahedral lamp at Lowe's. https://t.co/vZoHOx2NRw 4 days ago

- Tennenbaum's proof of the irrationality of the square root of 2
- How to curve an exam and assign grades
- What is the difference between a theorem, a lemma, and a corollary?
- Music is math: ten songs about mathematics
- Is or an inclusive or or an exclusive or?
- Calculus in politics
- LaTeX now available in Google Docs
- Playing the probabilities in Settlers of Catan
- Showing two expressions are equal: stop the madness
- Measuring an angle with a ruler