```
What's the angle between the red lines? pic.twitter.com/IXK5GfvM0N
— Will Feavyour (@NextLevelMaths) April 3, 2015
```

180 Days of Ideas for Discussion in Math Class. (as of 9July2014, we're in overtime!)

## Sunday, June 7, 2015

### 479: Dihedral Angle

## Saturday, June 6, 2015

### 478: Salinon Areas

source:

The Salinon was first introduced in the Book of Lemmas, a work attributed to Archimedes. http://t.co/crVrwtxeb8

— Cliff Pickover (@pickover) June 6, 2015

## Thursday, June 4, 2015

## Tuesday, June 2, 2015

### 476: Squares and Cubes

How is this problem

related to this one from a few days back?

related to this one from a few days back?

Is any square number times four another square number? |

Subscribe to:
Posts (Atom)