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在一节数学自习课上,小明意外地发现了这样一个奇怪的结论:所有的三角形都是等腰三角形．小明还用严格的推理“证明”了这一结论,其推理过程如下:
In a mathematics class, Xiaoming unexpectedly discovered such a strange conclusion: All triangles are isosceles triangles. Xiao Ming also “proved” this conclusion with strict reasoning. The reasoning process is as follows: