与三角形的外心有关的数学问题在前几年经常被选入各级各类竞赛试题中,随着当今高考试题变知识立意为能力立意,这类题目便出现在全国各省市高考模拟试题中.特别是2003年,全国、北京、上海的高考试题都以大题的形式出现,充当“把关题”的重要角色.这类问题涉及知识面广,极富思考 The mathematics problems related to the external heart of the triangle were often selected in various competition examination questions at various levels in the previous years. With the current high examination questions, the knowledge concept is considered as competence, this type of problem has appeared in the national college entrance examination simulation test questions. In particular, in 2003, the national exams in Beijing, Shanghai, and Shanghai were presented in the form of big questions and played an important role in the “Critical Passage.” These types of questions involved extensive knowledge and thoughts.