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2007年北京市中学生数学竞赛初二年级试题的第四题是一道难度适中、颇具思考性的平面几何问题.此题解法灵活多样,思维宽广,能较好地检查学生运用所学知识解决问题的应变能力.现对该题进行多角度
The fourth question of the 2007 second grade mathematics contest for middle school students of the Beijing Municipality is a plane geometry problem of moderate difficulty and thoughtfulness. The solution to this problem is flexible and diverse, broad in thinking, and can be used to better examine students’ knowledge using the knowledge they have learned to solve problems. Resilience. Now multi-angle on this question