Analysis of the Key Points and Difficulties in Junior High School Mathematics Entrance Examination 0 1 Function The linear function, inverse proportional function and quadratic function account for about 15% of the total score. Quadratic function is the key and difficult point of senior high school entrance examination, which will appear in filling in the blanks, selecting topics and solving problems. Moreover, the last two questions in the test paper usually have a solution, and the general quadratic function and the images and properties of quadratic function, as well as the triangle and quadrilateral synthesis questions are difficult to apply. Algebraic formula, fraction, simplification of quadratic root, algebraic operation, factorization, quadratic root, scientific counting and fractional simplification are all key points in junior high school, among which factorization and understanding the relationship between factorization and algebraic multiplication and fractional operation are difficult. The senior high school entrance examination generally appears in the form of multiple-choice questions and fill-in-the-blank questions, but it is the basis for solving complete answers. The proficiency of computing ability is directly related to the correct rate of answering questions. 0 3 Application problems account for about 30% of the total score, including equation (group) application, linear inequality (group) application, function application, trigonometric solution application and probability statistics application. Generally, there will be 2~3 solutions (about 30 points) and 2~3 multiple-choice questions and fill-in-the-blank questions (10 ~ 15 points), accounting for about 30% of the total score of the senior high school entrance examination. Triangle and quadrilateral triangle: congruence, similarity, bisector, vertical line, height line, right triangle and quadrilateral: parallelogram, rectangle, diamond and square, accounting for about 25% of the total score of the senior high school entrance examination. The learning of solving triangles in the second volume of Grade Three is based on right triangle. There will be a big question about the ship hitting the rocks, the height of the building and the shadow in the senior high school entrance examination. I studied quadrilateral in Grade Two. There are many special quadrilateral properties and judgment theorems, which are easy to be confused. The types of quadrangles are changeable and difficult to calculate and prove. It often appears in the finale of multiple-choice questions, fill-in-the-blank questions and solution questions in the senior high school entrance examination. The total score 10% is about 0.5, including the basic properties of the circle, the positional relationship between points, straight lines and the circle, the central angle and external angle of the circle, the nature and judgment of the tangent, and the arc length and area of the sector. Among them, the nature and judgment of tangent line, the understanding and application of basic properties in circle, the positional relationship between straight line and circle, and the calculation of length and angle of some line segments in circle are the key and difficult points. This article is collected by Education Network for your reference only.