• 10. The Pythagorean theorem
• 11. Applications of the Pythagorean theorem
• Part II: Trigonometry and geometry
• 12. Solving a pair of equations by calculating
• 13. Solving a pair of equations graphically
• 14. Applications of equation pairs
• 15. The tangent angle of a circle
• 16. The inscribed and central angles of a circle
• Part III: Revision and applications