A strip of paper folded into a hexagon with hidden faces. Click the hexagon to flex it and reveal new faces!
Face 1 of 3
A hexaflexagon is made by folding a long strip of equilateral triangles into a hexagon.
Pinching and folding (flexing) cycles through hidden faces. Invented by Arthur Stone in 1939 and
analyzed by Richard Feynman and John Tukey. The hexahexaflexagon has 6 faces but not all are equally accessible —
some faces are harder to reach than others.