从手拉手全等的构造到手拉手相似的构造（视频汇总篇）
从一种新视角解读手拉手全等和手拉手相似的构造试题部分：
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构造的原理
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构造手拉手相似模型求线段长度或最值问题视频讲解
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数学教育 中学数学教学探讨，教材解读，解题研究。186篇原创内容 公众号
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