如图,已知
,
,
是三个全等的等腰三角形,底边
,
,
在同一条直线上,且
,
,
交
于点
. 求
,
及
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0acc93490a6a784eb62201d93dd93d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80109f84d1dd3432514ffa836f51d37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b40d0d2f3cdd8981bb792ad87efb42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54fead0a26ef818cd6382ca706440fe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3ce3e948abd9ede05ce35536aa09311.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/505abdb4631fe10cdcdde3dc3d6aad32.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/2/e0d3ece5-2489-45ad-bc11-d229fc6d3539.png?resizew=181)
更新时间:2023-07-25 13:34:45
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】已知
和
是一对共顶点的等腰直角三角形,
,连接
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/28/5d2f7cb4-9c08-4fe7-a8b8-c2731871538c.png?resizew=507)
(1)如图1,求证:
;
(2)如图2,点B在线段
上(不与端点D, E重合),
和
交于点G,且
为等腰三角形,求
的度数;
(3)如图3,若
,点F是线段
,
的交点,求证:点F是
的中点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aefe4a3e7a7fa195ed6a6712447639b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5148f9e9bcb714acf977325e3494c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/28/5d2f7cb4-9c08-4fe7-a8b8-c2731871538c.png?resizew=507)
(1)如图1,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda2b7d37641a3f3365b33b380a40a96.png)
(2)如图2,点B在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21fea7102fa3f635f73b235ffad28ff8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae095c41537ea07706e6dda4e3da1941.png)
(3)如图3,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe25dc1ee90af64d4244134182c4c1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
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解答题-证明题
|
适中
(0.65)
【推荐2】如图,在
中,
,
是
的外接圆,过点O作
的垂线,垂足为D,分别交
的延长线,
于点E,F;
,
的延长线交于点G.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/30/ef107f09-3e52-4f6f-a0db-7b83749baf4e.png?resizew=248)
(1)求证![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0d89491853c94cd6eec0d8daee4c7a0.png)
(2)若
求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db7ea03277f8408fabe5b327cc34838f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/30/ef107f09-3e52-4f6f-a0db-7b83749baf4e.png?resizew=248)
(1)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0d89491853c94cd6eec0d8daee4c7a0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/671727ced126b0187399982d3275dbd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
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解答题-问答题
|
适中
(0.65)
【推荐1】如图,乐乐测得学校门口栏杆的短臂
长1米,长臂
长4米,当短臂外端A下降
米时,求长臂外端B升高多少米?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e5db9fa0bc36e2308bd3eecd5e78351.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/15/95114d01-c40d-49e7-acff-61dbbaa30eae.png?resizew=181)
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解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐2】如图,在矩形
中,
,
,点
沿
边从点
开始向点
以每秒1个单位长度的速度运动;点
沿
边从点
开始向点
以每秒2个单位长度的速度运动.如果
同时出发,用
秒表示运动的时间.请解答下列问题:
![](https://img.xkw.com/dksih/QBM/2020/9/24/2556780884819968/2557573975851008/STEM/ddb4f5969c7c4d1e88ccc5c1427b2336.png?resizew=183)
(1)当
为何值时,
;
(2)当
为何值时,以点
为顶点的三角形与
相似?
(3)在运动过程中,
的面积是否存在最小值?若存在,求出最小值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b65065ec3a0cb4b050989165c003d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7523a8c4f99e7fe1368a491160b8c54.png)
![](https://img.xkw.com/dksih/QBM/2020/9/24/2556780884819968/2557573975851008/STEM/ddb4f5969c7c4d1e88ccc5c1427b2336.png?resizew=183)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a68f71476e365d4c354bd1f6963d1065.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4c145957fbd3fe95afceb16ad9e6744.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/417d8c68aac736fa56f7fc6f6c8a07cd.png)
(3)在运动过程中,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f201a40fedca4ad14db193f4db2127e.png)
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