切割线定理教学拾遗巢湖市赵集中学刘玉明切割线定理是初中几何中的一个重要定理，在课本、课外资料、中考、竞赛中都时有出现，且题目新颖，灵活多变，学生往往甚感困难，因此教师在教学中有计划、有目的、有步骤地对切割线定理进行补充、演化无疑是十分有益的。下面就切... Cutting Line Theorem Teaching Collection Chaohu Zhao Congxue Liu Yuming The cutting line theorem is an important theorem in junior middle school geometry. It appears in textbooks, extracurricular materials, Chinese exams, and competitions. It is novel and flexible, and students often feel very fluent. Difficulties, therefore, teachers in the teaching plan, purpose, and step-by-step process to supplement and evolve the cutting line theorem is undoubtedly very helpful. The following cut...