Robert J. Lang, one of the worlds foremost origami artists and scientists, presents the never-before-described mathematical and geometric principles that allow

Diagrams and instructions for constructing over 120 models: party hat, flapping bird, matador, Japanese lady, many more. For all levels.

The magnum opus of one of the world's leading origami artists, the second edition of Origami Design Secrets reveals the underlying concepts of origami and how t