These street signs are at the intersection of 4th Ave. and 16th St. in Yuma, Arizona.

The street signs say...

+---------+ | 4th Ave | ----------- | 16th St | +---------+the numbers are: 4 16 the math is: 4 = sqrt(16) more math: sqrt(4) = sqrt(sqrt(16))

**Creator:** Gerald Thurman
[gthurman@gmail.com]

**Created:** 17 December 2007

This work is licensed under a Creative Commons Attribution 3.0 United States License.