## Mathematical circus: more games, puzzles, paradoxes, & other mathematical entertainments from Scientific American ; with thoughts from readers, afterthoughts from the author, and 105 drawings & diagramsA book of all sorts of stimulating ideas and feasts for the eyes, hands and brain. |

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### Contents

Optical Illusions | 3 |

Matches | 16 |

Spheres and Hyperspheres | 30 |

Copyright | |

12 other sections not shown

### Common terms and phrases

abacist abacus angle answer arcs astronomers bill Bode's law Boolean algebra calculating called cards cell CHAPTER chess circle coin compass corner counters cube cyclic number decimal diagonals digital root distance dominoes draw equal equilateral triangle example F-number Fibonacci numbers Fibonacci sequence formula four given golden ratio graph grid H. S. M. Coxeter hyperspheres illusion infinite integers intersect knight's tour lattice length Lucas number Lucas sequence magic square Mascheroni matches Mathematical mathematician moon move multiplied Napoleon's problem number of digits number of steps order-2 pair palindrome path pattern planets play prime probability problem proof propositional calculus prove puzzle radius random walk reader Recreational Mathematics rotate Sackson Scientific American score second player serial number shown in Figure side simple simplest simplicity solution sphere symbols theorem theory tiles tion trick Turing unit vertex walker word zero