Freese's Dissection of a Regular Dodecagon into a Regular Hexagon and the Reverse
This Demonstration shows Freese's dissection of a regular dodecagon into a regular hexagon. The reverse dissection is also shown.
The photo is from [1, plate 116].
 G. N. Frederickson, Ernest Irving Freese's Geometric Transformations: The Man, the Manuscript, the Magnificent Dissections!, New Jersey: World Scientific, 2018.