You might enjoy Frederickson’s book on hinged dissections https://amzn.com/0521811929/
Edit: Many thanks. That does look like a great book.
Without clicking the link, I'd bet dollars to donuts the book is titled "Hinged Dissections", "Hinged Dissections: A Pivotal Analysis", "Hinged Dissections: Swing Sets", etc.
edit: it's "Hinged Dissections: Swinging and Twisting". I prefer "A Pivotal Analysis".
It was getting greyed out from downvotes. I surmised that it was because it was only an Amazon link with no additional information. OP added info and comment is no longer greyed. Win?