Articles How to write and publish an origami book Part 1: From idea to proposal Part 2: Negotiating the contract and writing the book Part 3: Production, marketing, motivation and other considerations Patterns The mathematics behind the folds 1. Folding the diagonal of a rectangle 2. Why does “A” paper work? 3. Why does the “60 degree fold” work? 4. Dividing lengths into equal parts 5. The end … or the beginning? Virtual origami diagramming Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Pinterest (Opens in new window)