Haga's Book It is a nice article. Haga's theorem are there,http://www.origami.gr.jp/Archives/People/CAGE_/divide/02-e.html Mathematics of paper folding,http://en.wikipedia.org/wiki/Mathematics_of_paper_folding#cite_note-12 Haga's book, we can get by Amazon, ORIGAMICS: MATHEMATICAL EXPOLORATIONS THROUGH PAPER FOLDING Reply
It is a nice article.
Haga's theorem are there,
http://www.origami.gr.jp/Archives/People/CAGE_/divide/02-e.html
Mathematics of paper folding,
http://en.wikipedia.org/wiki/Mathematics_of_paper_folding#cite_note-12
Haga's book, we can get by Amazon,
ORIGAMICS: MATHEMATICAL EXPOLORATIONS THROUGH PAPER FOLDING