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八年级数学：怎么求∠EBF+∠EBG的值？巧妙转换，勾股定理拓展题
八年级数学：怎么求∠EBF+∠EBG的值？巧妙转换，勾股定理拓展考题
初中数学，直角三角形，勾股定理及逆定理，基础训练，培优专题37/169
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