The mathematics of origami

Origami is a widespread art form gaining popularity among mathe- maticians for its remarkable ability to perform geometric constructions. This article provides a brief introduction to the mathematical aspects of origami and shows how origami can be used to perform two well- known constructions, angle trisection and doubling the cube, which are impossible to solve using only the compass and the straight edge.

http://ms.appliedprobability.org/data/files/feature%20articles/46-1-3.pdf

Haga's theorem

recursos.crfptic.es:9080/jspui/bitstream/recursos/648/8/Axiomas%20y%20Teoremas.pdf