Acknowledgments. Introduction. PART 1: INTRODUCTION TO TWO-DIMENSIONAL (2-D) GEOMETRIC FIGURES. 1. Points, Lines, Planes. 2. Angles. 3. Triangles. 4. Quadrilaterals. Resources on the Web. PART 2: AREAS AND PERIMETERS OF TWO-DIMENSIONAL (2-D) GEOMETRIC FIGURES. 1. Area and Perimeter. 2. Units of Area. 3. Area and Perimeters of Parallelograms and Trapezoids. Resources on the Web. PART 3: CIRCLES AND PI. 1. Pi, Circle Parts, and Circle Measurements. Resources on the Web. PART 4: INTRODUCTION TO THREE-DIMENSIONAL (3-D) GEOMETRIC FIGURES. 1. Polyhedra. 2. Platonic Solids. 3. Surface Area. 4. Volume. 5. Nets of Solids. Resources on the Web. PART 5: SYMMETRY. 1. Rigid Motions: Rotation, Reflection, Translation, Glide Reflection. 2. Symmetries. 3. Lines of Symmetry. 4. Tessellations. Resources on the Web. Appendix: Geometric Figures. Glossary. Index.
THE MATH FORUM @ Drexel (www.mathforum.org) is an award-winning Web site and one of the most popular online math resources for students and teachers. The Math Forum offers answers to all kinds of math questions, prepared by a team of math experts. It also keeps archives of previous questions and answers, hosts online communities, and posts several "problems of the week."