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一、中考视点 1．图形的初步认识 (1)围绕棱柱的展开图、正方体、组合体的三视图来命题． (2)围绕互为余角、互为补角的概念和性质来命题,解答时重视方程思想的运用． (3)围绕平行的条件(判定)和特征(性质)来命题． 2．有理数、整式、变量之间的关系 (1)有理数:正、负数的实际意义,有理数的分类和判断,数轴,求一个数的相反数、绝对值、倒数,有理数的大小比较以及运算技巧等,都经常被中考所涉及． (2)整式:中考常常围绕整式的有关概念、幂的运算性质、乘法公式
First, the examination point of view 1. A preliminary understanding of the graph (1) Propositions around the three-views of the expanded view of the prism, the cube, and the assembly. (2) Propositions are based on the concepts and natures of mutual complement and complementary angles, and the use of equations is emphasized when answering. (3) Propositions around parallel conditions (decisions) and features (properties). 2. The relationship between rational numbers, integers, and variables (1) Rational numbers: The actual meaning of positive and negative numbers, the classification and judgment of rational numbers, the number axis, the inverse number of an integer, the absolute value, the inverse, the comparison of the size of rational numbers, and the calculation skills, etc. Are often involved in the examination. (2) Integral formulae: the Chinese exam often revolves around the concept of integral formula, the nature of the power of the power, the formula of multiplication