    Program Resources Online Student Edition Student Workbooks Math in the Workplace Meet the Authors Problem-Solving Strategy Updates Scavenger Hunt Recording Sheet Chapter Resources Chapter Investigations Chapter Readiness Quiz Chapter Review Activities Chapter Test Data Updates Problem of the Week Cards Test Practice Lesson Resources Extra Examples Personal Tutor Self-Check Quizzes Concepts in Motion |  |  MathematicsChapter InvestigationsChapter 9: Proportions and Similarity Are Golden Triangles Expensive? Read how the golden section occurs in art, architecture, and music. Log InThe resource you requested requires you to enter a username and password below: |
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