如图,在四边形ABCD中,AC平分∠BCD,AC⊥AB,E是BC的中点,AD⊥AE.
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91339011ac5a580d607516a196bb85e3.png)
(2)过E作EG⊥AB,延长EG至点F,使FG=EG,若∠B=30°,求证:四边形AFEC是菱形.
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91339011ac5a580d607516a196bb85e3.png)
(2)过E作EG⊥AB,延长EG至点F,使FG=EG,若∠B=30°,求证:四边形AFEC是菱形.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/fbc0fe1a-eb25-4c57-82e2-c7b3fb1fcdbd.png?resizew=201)
2021·上海·二模 查看更多[1]
更新时间:2021-05-05 21:12:39
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【推荐2】如图,在矩形
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【推荐2】如图,在
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(2)如果点M、N分别在线段
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(2)如果
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【推荐2】如图,△ABC与△CDE都是等边三角形,点E、F分别在AC、BC上,且EF∥AB
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【推荐1】如图,
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(1)求
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(2)若点
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适中
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【推荐2】如图,在
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(1)求证:
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(2)求证:
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(3)若
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