MATHEMATICS AND ORIGAMI

Jesús de la Peña Hernández

• Using D as a reference, mountain and valley fold (not flattening), to obtain a bellows con-
  figuration. Then flatten after coincidence of sides and folds.


• Unfold to see the square equally divided.

Solution2

1

2

3

A

C

D

B E

D

(^123)
(^456)
X
X
D
D
J J