num_pages: 311
description: Offers puzzles and problems dealing with logic, fractals, negative numbers, topology, and geometry
language: English
title: Penrose Tiles to Trapdoor Ciphers
titlecomplete: Penrose Tiles to Trapdoor Ciphers
genres: Mathematics, Puzzles, Science, Nonfiction
ratings_count: 58
publisher: W H Freeman & Co