1 formula for finding roots

Discrimination of roots of quadratic equation 2- detector

Vieta's Theorem.

4 the application of quadratic equation in one variable

5 Clear and Simple —— Clever Application of Structural Equation

Integer solution of quadratic equation with one variable

7 transformation-equations and equations that can be transformed into quadratic equations of one variable.

8 parabola

9 the application of quadratic function

10 quadratic function and quadratic equation

1 1 algebraic maximum

Statistics and probability

12 statistics and probability

Space and graphics

13 rotation transformation

14 acute trigonometric function

Basic properties of 15 circle

16 converts flexible circular corners

17 lines and circles

18 on inscribed circle of triangle

/kloc-proportional line segment in 0/9 circle

20 laps and laps.

2 1 auxiliary circle

22 geometric maximum

23 geometric fixed value

The four centers of a triangle

Synthesis and extension

25 Parabolic and Linear Form (1) —— A Special Triangular Problem Generated by Moving Points

Parabola and Linear Form (2) —— A Special Quadrilateral Problem Generated by Moving Points

27 Parabola and Linear Form (3) —— Area Problem of Moving Point Generation

28 Circle and Cartesian Coordinate System —— Tangency Problems Caused by Moving Points

Matching method

Calculation of shadow area related to circle

Round bread roll