如图:
是等边三角形,点D、E、F分别在边
、
、
的延长线上,且
.求证:
是等边三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ec86626099a7b9b3aecd66f4fe1a9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/20/d746392d-f61d-4836-812f-9f6e4caa2618.png?resizew=114)
更新时间:2023-10-19 15:43:34
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![](https://img.xkw.com/dksih/QBM/2020/10/22/2576766556561408/2578517324709888/STEM/072f6bb2-5bb1-4566-bc60-0060c0de990f.png)
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【推荐2】如图,△ABC和△ADE都是等腰三角形,且∠BAC=90°,∠DAE=90°,B,C,D在同一条直线上.
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(1)求证:BD=CE.
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【推荐1】如图,正方形ABCD的右侧作等边△ABE,连接DE、AC交于点F,连接BF,
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/21/229d867c-13ca-4959-8615-75e6268170ad.png?resizew=178)
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/21/229d867c-13ca-4959-8615-75e6268170ad.png?resizew=178)
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【推荐2】请补充完成以下证明过程:
如图,已知在等边三角形
中,D、E分别是
上的点,且
.
求证:
.
证明:
为等边三角形,(已知)
,( )
( )
(已知)
( )
.( )
如图,已知在等边三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0d54431bbb28ebd98db5c1dc6083a75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d42218a68301d770accaaefb96b19f8a.png)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a26b33f5b71039c35ac5e93795e254f9.png)
证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce8f76f6531524d4f34e30899dc492b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5112ba7d28a4d5155c41f9d886b1059.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b6cf4a15debec25bb89083b846509a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97af286057217f118c32e97c1b8da403.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/218c2358f05a2d613255c7538958afb9.png)
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