![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53f5c55aca8e740a8439978b2b90e027.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.内心 | B.外心 | C.重心 | D.垂心 |
23-24高一下·天津北辰·期中 查看更多[2]
更新时间:2024-05-09 12:16:21
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相似题推荐
单选题
|
适中
(0.65)
名校
【推荐1】已知向量
满足
且
则
中的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44cbea69783ef033bf837c403cf36ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cf99dd53ceaec852f5e9e756b0e5d9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd6ca66e01429baf54668ae0e7601290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c6fbb5705e122e44ec1cee983e9b1e9.png)
A.![]() | B.![]() | C.![]() | D.不能确定 |
您最近一年使用:0次
单选题
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适中
(0.65)
名校
解题方法
【推荐2】平面向量
与
的夹角为135°,已知
,
,则
=( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a92e6eba8dab638fd66831cd3a0b6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/427fa45527d0ce469bfd060bf6f991f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2b77d2a272ae4e5013ed06594349edb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68ebec48118c79189fdfc2dba69bb803.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb6753f494dbcbc843644eaaac6c17d4.png)
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3】如图,在等腰梯形ABCD中,
,
,
,E为BC边上一点,且满足
,若
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/10/ea61174d-498a-4cf1-8123-1241111e87cf.png?resizew=199)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4f5eec0addba78f2e0cdfb7ecc59a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a55c3f663b6b205bb0d541a72e4d4759.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63516705d353a42e02caaee25a115dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/980d12e8008f49d6cdb9e2aff93a4b73.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/10/ea61174d-498a-4cf1-8123-1241111e87cf.png?resizew=199)
A.![]() | B.![]() | C.4 | D.8 |
您最近一年使用:0次
单选题
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适中
(0.65)
名校
解题方法
【推荐2】已知
是两个单位向量,
时,
的最小值为
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad59ee7969f2a082ed53bdf0aaa748ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13e87088da41685cc8d433fbbe0e18d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/592b56942766f28d0e8c0056ab3c73e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次