论文部分内容阅读
初中数学中,特殊三角形主要指等腰三角形和直角三角形.特殊三角形的存在性问题是云南省中考数学的常考内容,主要出现在综合题和较难的填空题中.一般情况下,题目先给出两个已知点,要求考生探究是否存在第三个点,使得这三个点构成的三角形恰为某种特殊三角形.若存在,请直接写出该点的坐标;若不存在,请说明理由.解决此类问题,学生不仅要掌握特殊三角形的有关性质,而且还需综合运用其他知识,比如,勾股定理、相似等内
In junior high school mathematics, the special triangle mainly refers to the isosceles triangle and the right triangle.The existential problem of the special triangle is the regular examination content of the middle school mathematics in Yunnan Province, which mainly appears in the comprehensive questions and the difficult blank questions.Generally, Given two known points, ask the candidate to explore whether there is a third point, so that the triangle formed by the three points is just a special triangle. If present, please write the coordinates of the point directly; if not, please Explain the reasons to solve such problems, students not only need to master the special nature of the triangle, but also the need to comprehensive use of other knowledge, such as the Pythagorean theorem, similar