Chapter 20 Axisymmetric

20. 1 axisymmetric

20. 1. 1 axisymmetric 20. 1.2 Properties of the perpendicular line of the line segment.

20.2 draw axisymmetric graphics

Application of information technology in axisymmetric pattern design

20.3 isosceles triangle

20.3. 1 isosceles triangle 20.3.2 equilateral triangle

The unequal relationship between the sides and angles of a triangle is explored experimentally.

20.4 The shortest path problem of project learning

Mathematical activities

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Chapter 265438 Multiplication and Factorization of +0 Algebraic Expressions

2 1. 1 multiplication of algebraic expressions

2 1. 1. 1 multiplication of the same radix power 2 1. 1.2 power 21.3 product power 21.3

2 1.2 multiplication formula

2 1.2. 1 square difference formula 2 1.2.2 complete square formula

Reading and Thinking about Yang Hui Triangle

2 1.3 factorization

2 1.3. 1 common factor method 2 1.3.2 formula method

Decomposition of reading and thinking patterns

Mathematical activities

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Chapter 22 Scores

22. 1 score

22. 1. 1 From score to score 22. 1.2 Basic properties of score

22.2 Fractional operation

22.2. 1 fractional multiplication and division 22.2.2 fractional addition and subtraction 22.2.3 integer exponential power

Can the water in the container be emptied?

22.3 fractional equation

Mathematical activities

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Chapter 23 Quadratic Radicals

23. 1 quadratic radical

23.2 multiplication and division of quadratic root

23.3 addition and subtraction of quadratic root

Reading and thinking of Helen-Qin Jiushao formula

Mathematical activities

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