如图,在
中,
,点D在
延长线上,连接
,若
,则
的长为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/019472695d96d88761ded02142bc6a32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/2021/4/13/2698778589282304/2702338184282112/STEM/54bc867a-d958-4b6f-91fc-09088bc2e836.png)
更新时间:2021-04-18 09:44:01
|
相似题推荐
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适中
(0.65)
【推荐1】如图,
中,
,
,点D、E分别是
、
的中点,
于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/13/dba1f491-9387-4313-975d-487f62b4a16c.png?resizew=175)
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a71a9d21f77e9535de152bb33f802bb.png)
__________ .
(2)连接DF,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d15962dd08f1198e7fa7f6a5a33538e.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c3e9ef3e849788645552cfb0735d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/187ed13a7bd532bd39af5e5ad7493a2c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/13/dba1f491-9387-4313-975d-487f62b4a16c.png?resizew=175)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a71a9d21f77e9535de152bb33f802bb.png)
(2)连接DF,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d15962dd08f1198e7fa7f6a5a33538e.png)
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填空题
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适中
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【推荐2】如图1,玉带桥拱高而薄,形若玉带,弧形的线条十分流畅.如图2,桥拱
关于水面
反射的影子
经过孤
所在的圆心O,已知水面宽
米,则水面
与该桥拱的最高点P之间的距离是________ 米,在离水面
相同高度的C,D处安装两盛景观灯,若点C是
的中点,则点C离水面
的距离是________ 米.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9d80f2addb9f19c08e39b201b226d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c6b8d95b188074ae972314973d6b96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9d80f2addb9f19c08e39b201b226d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e14f419e14bc30fe2fada469a0fbbb64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/18/f7654d72-18b2-415c-b24d-b96aec98f761.png?resizew=335)
您最近一年使用:0次