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Chapter 1	The Bowling Pins A Difficult Crossing The Bicycle and the Car	Answer Answer Answer
Chapter 2	The Notched Checkerboard The Cheapest Bracelet The Unhappy Worker	Answer Answer Answer
Chapter 3	The Careless Watchmaker The Two Elevators The Six Arrows	Answer Answer Answer
Chapter 4	The Bus Schedule An Unusual Purchase The Balancing Shapes	Answer Answer Answer
Chapter 5	The Nine-Part Frustrum Two Cubes Planting Equal Plots	Answer Answer Answer
Chapter 6	The Slanted Square The Shortest Path	Answer Answer
Chapter 7	Two Tricky Triangles Two- and Three-Digit Squares	Answer Answer
Chapter 8	The Dimes and Quarters Three Squares in a Hexagon	Answer Answer
Chapter 9	The Unknown Weight The Spider and the Fly	Answer Answer
Chapter 10	Tangents to a Parabola The Twelve Dots A Curious Crescent	Answer Answer Answer
Chapter 11	Reversing White and Black The Moving Triangle The Colormatch Square	Answer Answer Answer
Chapter 12	The Game of Five The Board Game The Perfect Cubes	Answer Answer Answer
Chapter 13	The Tilted Mirror The Folded Triangle	Answer Answer
Chapter 14	The Inscribed Quadrilateral Five Squares on a Rhombus	Answer Answer