Posted on Sep 1, 2010

## Interest

Discovered by an American in Germany since 25 years

on Jan 14, 2005

on Jan 14, 2005

# Stumblers Who Commented On This Page

## Lisuebie

### an American in Germany since 25 years

Can you roll a triangle? Use a Reuleaux triangle. Actually, the question is how many different closed curves can you place between two parallel lines and roll forward on a flat surface without any bobbing up and down. In other words have a constant width. The answer is an infinite number! The Reauleau triangle is only one. Interesting.

Posted on Jan 14, 2005

## deadpoets

## He

looks like wankel motor