Chapter 2: Segment Measure and Coordinate Graphing
Page 55 The Weather Channel Site

Chapter 3: Angles
Page 101 School Enrollment

Chapter 4: Parallels
Page 178 Best Telephone Rates

Chapter 5: Triangles and Congruence
Page 191 Interdisciplinary Illusions

Chapter 6: More About Triangles
Page 255 Track and Field

Chapter 7: Triangle Inequalities
Page 277 Music Sales Statistics

Chapter 8: Quadrilaterals
Page 332 Nielsen Media Research

Chapter 9: Proportions and Similarity
Page 354 Tax Freedom Day

Chapter 10: Polygons and Area
Page 414 The Great Lakes

Chapter 11: Circles
Page 479 U.S. Mint, State Quarters Program

Chapter 12: Surface Area and Volume
Page 530 Space Shuttle

Chapter 13: Right Triangles and Trigonometry
Page 561 Gothic Architecture

Chapter 14: Circle Relationships
Page 622 International Internet Users

Chapter 15: Formalizing Proof
Page 653 American Fact Finder

Chapter 16: More Coordinate Graphing and Transformations
Page 680 Teens and Money