如图,已知菱形
,
,将线段
绕点B逆时针旋转
(
)得到线段
,作
的角平分线
交
于点P,连接
并延长交
于点F,连接
,
.
(1)如图1,当
,即点D与点E重合时,求证:
是等边三角形;
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/29/941e2c69-a1e5-4b6c-954a-abbbb30f8c68.png?resizew=166)
(2)如图2,当
时,求证:
;
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/29/9b61f8d2-8bce-443a-ae69-984af2c19219.png?resizew=150)
(3)在线段
的旋转过程中,直接写出线段
,
,
之间的数量关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5f7af3d474e4aac4e11ba50ad66e727.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2bae8d061130767b71ab3885084565f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79cd9d0d73549e2944578f3513631ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
(1)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d506cde7e074adc6d8be3c2b11e47482.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff39c7aa648afd1080206c8080ff79e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/29/941e2c69-a1e5-4b6c-954a-abbbb30f8c68.png?resizew=166)
(2)如图2,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3508375662b73c746ed51f917fe99448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f40b3bf6b27f936e0747de92151a1f77.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/29/9b61f8d2-8bce-443a-ae69-984af2c19219.png?resizew=150)
(3)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a477603f3f88c3b48352b6130f9ad5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2319a01218514917e446dfc807a625ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735056c174e8dd7906257a2a50a962a7.png)
更新时间:2024-01-29 19:18:48
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【推荐1】如图,△ABC和△DBC中,∠ACB=∠DBC=90°,E是BC的中点,且ED⊥AB于点F,且AB=DE,CD交AB于点M.
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【推荐2】如图,在
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【推荐2】如图,点
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(1)当
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