Chapter 2: Segment Measure and Coordinate Graphing
Page 74 "V" is for Vector
Explore further topics about vectors online.

Chapter 3: Angles
Page 102 Those Magical Midpoints
Discover how the midpoints of the sides of an equilateral triangle lead to a fascinating fractal.

Chapter 4: Parallels
Page 154 When Does a Circle Become a Line?
Discover more information about Non-Euclidean Geometry online.

Chapter 5:Triangles and Congruence
Page 208 Take a Shortcut
Use your java-enabled web browser to review triangle congruence or download files for use in Geometer's Sketchpad.

Chapter 6: More About Triangles
Page 244 What a Circle!
Use your Java-enabled web browser to explore the circumcenter, centroid, orthocenter, and incenter online.

Chapter 7: Triangle Inequalities
Page 288 Linguine Triangles Hold the Sauce!
Investigate triangle inequalities and take an online quiz.

Chapter 8: Quadrilaterals
Page 340 Go Fly a Kite!
Kite Plans on the Internet

Chapter 9: Proportions and Similarity
Page 380 Are Golden Triangles Expensive?
Read how the golden section occurs in art, architecture, and music.

Chapter 10: Polygons and Area
Page 432 How About That Pythagoras!
Read about the achievements and beliefs of Pythagoras.

Chapter 11: Circles
Page 460 A Locus is Not a Grasshopper!
Click the Modeling/Multiple Representation link and then check out the section about locus.

Chapter 12: Surface Area and Volume
Page 502 Take a Slice
Take an interactive look at the linkages between art, math and science at the New Trier High School Connections Project.

Chapter 13: Right Triangles and Trigonometry
Page 570 I Spy
Discover the many techniques for measuring the height of a tree.

Chapter 14: Circle Relationships
Page 598 The Ins and Outs of Polygons
Visit the Math Forum's Geometry Through Art page.

Chapter 15: Formalizing Proof
Page 666 Don't Touch the Poison Ivy
You may have never imagined that an indirect proof could be as simple as this one is.

Chapter 16: More Coordinate Graphing and Transformations
Page 708 Artists Do Math, Don't They?
Explore translations, rotations, and reflections.