It is not a second-grade topic to mention the common factor in the textbook of People's Education Press. Chapter 11: Judgment of congruent triangles's triangle congruence 165438+ 0 congruent triangles 1.2 congruence of reading and thinking and the nature of congruent triangles bisector1.3 angle. Teaching activity summary review questions 165438. 0 Chapter XII Axisymmetric 12. 1 Axisymmetric 12.2 Making Axisymmetric Graphics 12.3 Summary of isosceles Triangle Teaching Activities Review Questions 12 Chapter XIII Real Numbers 13. 1 Square Root/Kloc-0. Conclusion Review question 13 Chapter 14 Elementary function 14. 1 variable and function 14.2 Elementary function 14.3 See equation (group) and inequality 14.4 Project learning option teaching activity summary review question/kloc-0. 8+05./KOOC-0/Algebraic Multiplication/KOOC-0/5.2 Multiplication Formula/KOOC-0/5.3 Algebraic Division Teaching Activity Summary Review Questions/KOOC-0/5 Chapter 16 Score/KOOC-0/6./KOOC-0/Score/KOOC-0/6. Summary and review of learning activities 16 Chapter 17 Inverse proportional function 17. 1 Application of inverse proportional function Explore the nature of inverse proportional function with information technology 17.2 Practical problems and inverse proportional function Reading and thinking mathematical activities summary and review questions 17 Chapter 18 Pythagorean theorem 1 8.6 5438+0 Pythagorean Theorem Reading and Thinking Proof of Pythagorean Theorem 65438+ 1 Law 19.2 Experiment and Exploration of Special Parallelogram 6543. 1 000000000000018+09.3 Trapezoidal observation and conjecture of the special in the plane rectangular coordinate system 9.4 Summary of Mathematical Activities Focus of Study Review 19 Chapter 20 Analysis of Data 20. 1 Representation of Data 20.2 Application of Information Technology to Search Data Several Measures of Mathematical Statistics Reading and Thinking by Computer