Posted by: **Dave Richeson** | June 22, 2011

## The Japanese theorem for nonconvex polygons

A couple of years ago I wrote blog posts about two beautiful theorems from geometry: the so-called Japanese theorem and Carnot’s theorem. Today I finished a draft of a web article that looks at both of these theorems in more detail. It contains all that you could want—connections between these theorems, generalizations of them, and consequence of them. It even has a little topology (the n-dimensional torus makes an appearance). The mathematics is supplemented by some Geogebra applets so that you can see the theorems in action.

~~You can find the draft of the article here: ~~**The Japanese theorem for nonconvex polygons** [The article is now online at the MAA's Loci.]

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I’m curious. How did you create the pages? It looks interesting. I’ mguessing it’s some kind of LaTeX conversion tool, but I can’t find a reference on the pages…

By:

Peteron June 27, 2011at 7:59 pm

I’m using jsMath for the LaTeX http://www.math.union.edu/~dpvc/jsMath/ It works really well.

By:

Dave Richesonon June 27, 2011at 9:33 pm

Ah, ok. I thought there was some nice conversion tool to transfer TeX, make sections into the menu etc. Looks nice!

By:

Peteron June 27, 2011at 10:08 pm

Hi All,

There are related mathematics and algorithms problem here, for those who love mathematics / algorithm problem solviing Mathalon , after all whats in mathematics without problems.

-Hemant

By:

Hemant Vermaon July 10, 2011at 3:52 am

[...] Japanese theorem for nonconvex polygons « Division by Zero on June 22, 2011 at 2:18 [...]

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The Japanese Theorem « Division by Zeroon September 4, 2011at 8:41 am