如图,在
中,
于点
,点
在
上,且
,
,
,
,则点
到
的距离是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4611ceb2a28f7a7e4d24266d7f99b22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f644feb032bbd8c4ec60a50c4f62ffe8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/348fb71fbc47fd87e9ce011652ef4186.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/6d27b20e-b282-40dc-9e07-c7ac4cace536.png?resizew=212)
更新时间:2024-02-21 21:27:27
|
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适中
(0.65)
【推荐1】如图,在平行四边形
中,
,
,以点C为圆心,以任意长为半径作弧,分别交
于点E,F,再分别以E,F为圆心,以大于
的长为半径作弧,两弧在
内交于点P,连接
并延长交
于点Q,连接
.若
时,则
与
的周长之差为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
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填空题
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适中
(0.65)
【推荐2】如图,在周长为10 cm的□ABCD中,AB≠AD,AC、BD相交于点O,OE⊥BD交AD于点E,连接BE,则△ABE的周长为 .
![](https://img.xkw.com/dksih/QBM/2014/5/13/1573726804852736/1573726810890240/STEM/a60afba2c73e489c8bf7ecdff8a2b67b.png?resizew=186)
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解题方法
【推荐1】如图D、E分别是AB、AC上的点,DE∥BC,△ABC的内角平分线AQ交DE于点P,过点P作直线交AB、AC于R、S,若
,则DE=________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38e8cd17477ab6444d1100e95baaa149.png)
![](https://img.xkw.com/dksih/QBM/2020/10/13/2570358490693632/2573021377200128/STEM/c96edd44429a4b28ab016d9772591c3c.png?resizew=196)
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【推荐2】如图,在△ABC中,点D在边AC上,∠ABD=∠ACB,如果S△ABD=4,S△BCD=5,CD=5,那么AB=_____ .
![](https://img.xkw.com/dksih/QBM/2018/12/22/2102524587040768/2106630301270017/STEM/06e63c80b741424eb8dd0902b03cc9f5.png?resizew=150)
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