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近几年来,中考题有关最值的几何问题频频出现,已成为一大亮点.在平面几何的动态问题中,当某几何元素按给定条件变动时,求某几何量(如线段的长度、图形的周长或面积、角的度数以及它们的和与差)的最大值或最小值问题,称为最值问题.由于此类问题形式多样,解题方法灵活多变,学生解决时比较困难,但只要经过探究分析,从中摸索一些规律可化难为易.本文试结合试题,将蕴涵在其中的各种最值问题显现出来,
In recent years, the most concerned about the examination questions on the geometric problems occur frequently, has become a major bright spot in the dynamic problem of plane geometry, when a geometric element changes according to the given conditions, find a geometric quantity (such as the length of the line, Graphics perimeter or area, the angle of the degree and their sum and difference) the maximum or minimum value problem, known as the most value problems .Because of such diverse forms, problem-solving methods are flexible and difficult for students to solve , But as long as through exploration and analysis, to explore some of the rules can be difficult for the difficult.This paper combined with test questions, the most significant problems in which the implications of the show,