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初二易错题：几何图形折叠问题，什么技巧能求出折痕长？
初中数学题，单元考、月考、期中考易错题型，本视频着重解析几何图形问题的做题方法，总结其中的易错点和做题技巧，中考高分必备！
七八九年级数学易错题，拿分技巧总结！40/73
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