为什么一道几何题不添加辅助线就做不出来,添加了才做的出来,添加辅助线后多了条件吗 知乎 Template




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tomski为什么一道几何题不添加辅助线就做不出来,添加了才做的出来,添加辅助线后多了条件吗 知乎 coloring