如图,在菱形
中,对角线
、
相交于点
.
,
,点
为
上一动点,点
以
的速度从点
出发沿
向点
运动.设运动时间为
,当![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c084dc62a6c09bcccc424c48e1b0e0a.png)
________
时,
为等腰三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22fefb18d4bc9dc409e596e91e94fdc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/571026e979e52c6f55dc25db6117c52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ee3dd1263678466e240288e8e02ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf8d17999cf5f4ff91a297c5412fb501.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c084dc62a6c09bcccc424c48e1b0e0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/703b40a6293ed9e33001e2919379b168.png)
![](https://img.xkw.com/dksih/QBM/2018/9/14/2032055415160832/2035986102517760/STEM/2db56087d35b4cb5853f775d551ad60d.png?resizew=113)
更新时间:2018-09-19 14:47:14
|
【知识点】 利用菱形的性质求线段长解读
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