在
中,
,
,求
边的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eeb0c8df3d8c5260768c5e407b3583a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c22bfd573998d62b9a2f9cbbf3bbc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
更新时间:2019-08-20 17:26:29
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】【问题呈现】
(1)如图1,
和
都是等边三角形,连接
,则
与
的数量关系为______;
【类比探究】
(2)如图2,
和
都是等腰直角三角形,
,连接
,则
______;
【拓展提升】
(3)如图3,
和
都是直角三角形,
,连接
,
①求
的值;
②延长
交
于点
,交
于点
,求
的度数.
(1)如图1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a03841966d8142fa4a4aed023e37931.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
【类比探究】
(2)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21c2425db34d83dbe44f3ee3d2c5439b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a03841966d8142fa4a4aed023e37931.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d698ee39cd00a9b6384e0c4897a055a.png)
【拓展提升】
(3)如图3,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae0557ee20e6b556b415fc60611d5b40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a03841966d8142fa4a4aed023e37931.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9af91834644b94e1b023b33e15a0644.png)
②延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77282d5b97a60264cf15fb74b48e4b59.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/27/7141d4c2-0318-4c34-b74f-48b9fd697523.png?resizew=355)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,在
中,
,
,
,点
从点
出发,以
的速度沿
运动;同时,点
从点
出发,以
的速度沿
运动.当点
到达点
时,
、
两点同时停止运动.设点
、
运动时间为
.
(1)当
时,
的面积为
?
(2)当
时,使线段
的长度为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2031d209711b058f3d278ede3c1d33.png)
?
(3)当
与
相似时,
的值是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c513dca3b8c31bc8d0ed4301e94cc1e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e268b5d48f1be920502f98a9b4c709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2a674be86c785995898ec30d6799568.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a5b342a70f7d52c3a2f8d891745e5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f051275aa34c90fd6957973f6640753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/171e02f78e30ca17469c7ec007dd8db3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee731cd0338d19158aa7160a3de317d9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/20/754b3660-7806-4a8e-a257-cf5701051d3b.png?resizew=170)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c084dc62a6c09bcccc424c48e1b0e0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/535fd0b786ddec1bd82e6e510143097c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d02ea8c4988c5c28ab93f0d70fb55a.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c084dc62a6c09bcccc424c48e1b0e0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e430f13f42cf2d44aa0f0e20b959684f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2031d209711b058f3d278ede3c1d33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72026e70f45cea6a7c49881592e73a02.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/535fd0b786ddec1bd82e6e510143097c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次