如图,在
中,
于点
,且
,
、
分别为
、
的中点,连接
、
,若
,则
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8cabcef1cee1213140371c499339864.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/20/e09a2c6f-4ab5-4f26-9a5e-8277ff9667b9.png?resizew=132)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2023-08-20 07:03:16
|
相似题推荐
单选题
|
适中
(0.65)
【推荐1】如图,将锐角
绕点C按逆时针方向旋转
(
是锐角),点A,B分别落在D,E位置,
和
相交于点M,连接
,若
,则下列结论中不正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/28/f7d30609-2e4e-4daa-a8b8-c53f375464bf.jpg?resizew=153)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0213c5787a5a6b38d11bceca5567f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e883f81c66ceef54d2d0556a68ed585.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/28/f7d30609-2e4e-4daa-a8b8-c53f375464bf.jpg?resizew=153)
A.![]() | B.![]() ![]() |
C.![]() | D.![]() |
您最近一年使用:0次
单选题
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适中
(0.65)
【推荐2】如图,点P是等边
内一点,将线段
绕点
沿顺时针方向旋转
得到线段
,连接
,
,若
,
,
,则下列结论正确的有( )个
①
为等边三角形;②
;③
;④
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/d2e21b75-a0cc-4ba6-80fe-43654dec6fd8.png?resizew=135)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70c733c8bb6ee8666dc5477d5fb8c6ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a630858806f18ca3aafd1ff1383531f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a99e1ad0d6fb0f13be56d09086366c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c327b3e91d8bea53255d9308a952a276.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eea78bf026d76f1cb9cc3dc9349a193.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3015db5ca1f49bb7bad43657e06863ed.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8e6ceca9d08093ea22df1506bb99be0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f4cb33cdb3e2994ac7b9a0abbabed2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c255a59a565d592184699bda49d04fab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdad35ed85adaecb7a5c4159fa64c8e2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/d2e21b75-a0cc-4ba6-80fe-43654dec6fd8.png?resizew=135)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐1】如图,在
和
中,
,
相交于点G,E,F分别是
的中点,连接
.若点F为
的内心,
,则下面结论错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce7f6d278f2ef7a193b7eed7be6b3c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd25cf7e576e25b47aff794b96ad0241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0692f50eab1023f1d51e86a77014d8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/989c75a3fd02e4971cab421c88de92f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a935c5795082a17981994de8ac83b1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be82f0668dbf884b6f2b33efce4874ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d64e0206b1814c35cc96bd2b6b12239a.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】如图,在扇形OAB中,半径OA=4,∠AOB=120°,点C在
上,OD⊥AC于点D,OE⊥BC于点E,当点C从点A运动到点B时,线段DE长度的变化情况是( )
![](https://img.xkw.com/dksih/QBM/2016/3/4/1573981094240256/1573981099769856/STEM/864eb1a6a2a847908c9361fabddde43a.png?resizew=146)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://img.xkw.com/dksih/QBM/2016/3/4/1573981094240256/1573981099769856/STEM/864eb1a6a2a847908c9361fabddde43a.png?resizew=146)
A.先变小,后变大 |
B.先变大,后变小 |
C.DE与OD的长度保持相等 |
D.固定不变 |
您最近一年使用:0次