MathPuzzle.com

https://www.mathpuzzle.com/

rectangles ? Yes. Star Polytopes Nan Ma has been making excellent visualizations of star polytopes . 1161 Unholey Hendeciamonds Patrick Hamlyn can divide these into 43 symmetric s
Math Games, Math Puzzles, and Mathematical Recreations

References

http://www.georgehart.com/virtual-polyhedra/references.html

H.S.M. Coxeter, Regular Polytopes. (excellent, college level) Peter R. Cromwell, Polyhedra. (very comprehensive) George W. Hart and Henri Picciotto, Zome Geometry. (Hands-on model

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