A Golden Dodecahedron, Jennifer's Puzzle, etc.
Peter Hilton and Jean Pederson, both mathematicians, have written papers and books together for about thirty years. Usually, geometry is a constant theme!
Now, the two mathematicians/authors have tried to compile most of their work into one volume: A Mathematical Tapestry: Demonstrating the Beautiful Unity of Mathematics (2010). Unfortunately, Peter Hilton, at age 87, died the same year that their book was published.
Consider this sample of interesting ideas (often overlapping and interconnected) that comprise their chapterlike "threads":
 Paperfolding
 Number theory
 Polyhedrons
 Geometry
 Algebra
 Combinatorics
 Symmetry
 Grouptheory
 History of Mathematics
Unfortunately, this list seems bland considering the book's content...so you will need to explore the Table of Contents via the previous link. Much of the book entices readers to do handson explorations, make discoveries, and establish relationships. Thus, the beauty of mathematics!
So, if you like exploring visual ideas, the tapestry comprising this book is a winner. And if you like tangential ideas in algebra and geometry, then this book certainly is for you....
