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[几何] 几何证明题4

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zhiwen posted 2023-11-15 22:35 |Read mode

如图,满足∠BAC=45°任意三角形ABC中
AB向内做正方形ABDE
BC向外作正方形BCGF
求证, G在始终直线ED上

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kuing posted 2023-11-15 22:54
连结你图中的 GI,易证 △ACB ≌ △ICG,得到 GI⊥AB 且 GI=AB,即得结论。

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hejoseph posted 2023-11-16 13:49
标题能不能写好一些,方便其他人也方便自己以后查找,总是某某证明题X这种太懒了

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