Chapter 1: Reasoning in Geometry (Page 10)
To Grandmother's House We Go!
Learn more about Pascal's Triangle at the Math Forum.

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.