Math Photo: Pothole Pentagon

Published by MrHonner on

Pothole Pentagon

I’ve read that there are over 500,000 manhole covers in New York City, but I’d never noticed these pentagonal bolts before.  A nice mathematical surprise among the grit and grime.

 


5 Comments

Chris Harrow · September 7, 2014 at 1:22 pm

WordPress › Error

There has been a critical error on this website.

Learn more about troubleshooting WordPress.