如图,
和
都是等边三角形,
三点共线.下列结论:
;
;
平分
;
,
是等边三角形.其中正确的有______ (只填序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15514bc735fe4b744672edefe00009c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a207ae4bbecb2069f09077c0a94f50f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae22cd2f52efae6ba10d95531f4e4db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2931a3891d76dcb5794ee5c29a9270ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd705efc52a5641ff6d6d3c8da6e5c1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9454f58867c0eccc37f1494312087595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df82c20882cf3024c3e98bb47ad1fa1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d09ebb1bbe51d694a0fc0cf4f3839b4e.png)
更新时间:2019-07-12 11:59:11
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(0.65)
【推荐1】如图,正方形
的边长为
,点
从点
出发沿着线段
向点
运动(不与点
、
重合),同时点
从点
出发沿着线段
向点
运动(不与点
、
重合),点
与点
的运动速度相同.
与
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,
为
中点.则当
运动到
中点时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db673db300497a09152ea6431b3587ca.png)
____ .当
周长为
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名校
【推荐2】在正方形
中,
,点
是
上一点,过点
作
于
,
于
,连结
,当
的长度取得最小值时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb4506d27656f9009b41c6d2fe44b47e.png)
______ .
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填空题
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适中
(0.65)
【推荐1】如图,在
中,
,
.点
在线段
上运动(
不与
,
重合),连接
,作
,
交线段
于点
.
(1)当
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b1bda34f3a04c19d5bf5f3155b6187.png)
______ °;
(2)当![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d57b4243fa7f6f9c73d11f3123c42ddb.png)
______ 时,
.
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(1)当
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(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d57b4243fa7f6f9c73d11f3123c42ddb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abaf30f9b5dba2fc7e55f0fbf1079c60.png)
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名校
【推荐2】如图,把一个等腰直角三角形
(
,
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【推荐1】如图,在等边三角形
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【推荐2】如图,在
中,
,
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于点E,交
的延长线于点D,若
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______ .
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