已知
是平面内两两不共线的向量,且
则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e12e95f703ad30ab9a3d38376830989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e7d52487370db340020d55d7fd0793e.png)
A.![]() | B.![]() |
C.![]() | D.当![]() ![]() ![]() |
23-24高一下·广西钦州·期中 查看更多[2]
更新时间:2024-05-27 15:14:25
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相似题推荐
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【推荐1】设平面内共起点的向量
的终点分别为
,且满足
,记
与
的夹角为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46fddc1f1c50aab4de7fff286d691b97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d12593b86f4965fb5b285ff88f6d435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a0b19e69be46452425916a0fcb49c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
A.![]() |
B.![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() ![]() |
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【推荐2】
中,D、E分别为
、
中点,
,
,( )
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f01c4faacedfe56f5127d6c0cc63cf.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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【推荐3】下列说法正确的有( )
A.在![]() ![]() ![]() |
B.已知![]() ![]() ![]() ![]() |
C.已知非零向量![]() ![]() ![]() ![]() |
D.已知![]() ![]() ![]() ![]() ![]() |
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【推荐1】抛物线
,过焦点
的直线
与抛物线
交于
两点(点A在第一象限),
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc7ad3432ac96b0a38beaa7f2edc3499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/242dc4cf2720b503e26ec8017d31444f.png)
A.![]() |
B.![]() |
C.当直线![]() ![]() ![]() ![]() |
D.当直线![]() ![]() ![]() |
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【推荐2】在平面直角坐标系中,O是坐标原点,
是圆
上两个不同的动点,
是
的中点,且满足
.设
到直线
的距离之和的最大值为
,则下列说法中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f99a1e81ddef3f160acbd2209df62072.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280a15c9173616370a63fa18938eb2c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8b0fc3da26d3d8daf22706f3fb6292b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e91cfbc764294f26799c48ef1ccb0cf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f99a1e81ddef3f160acbd2209df62072.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf829549a4e4fff1b6f39376a4eb51c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
A.向量![]() ![]() ![]() |
B.![]() |
C.![]() |
D.若![]() ![]() ![]() |
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【推荐1】设点O是
所在平面内任意一点,
的内角A,B,C的对边分别为a,b,c,已知点O不在
的边上,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.若点O是![]() ![]() |
B.若点O是![]() ![]() |
C.若![]() ![]() |
D.若O为![]() ![]() ![]() |
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【推荐2】设
为
所在平面上一点,内角
,
,
所对的边分别是
,
,
,则正确的是( )
![](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/5963abe8f421bd99a2aaa94831a951e9.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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
A.![]() ![]() ![]() |
B.![]() ![]() ![]() |
C.![]() ![]() ![]() |
D.![]() ![]() ![]() |
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【推荐1】窗花是贴在窗子或窗户上的剪纸,是中国古老的传统民间艺术之一,图1是一个正八边形窗花隔断,图2是从窗花图中抽象出的几何图形的示意图.已知正八边形ABCDEFGH的边长为1,P是正八边形ABCDEFGH边上任意一点,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/329b5617-880d-411b-a1dc-7303aab8dd73.png?resizew=307)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/329b5617-880d-411b-a1dc-7303aab8dd73.png?resizew=307)
A.![]() ![]() | B.![]() |
C.![]() ![]() ![]() | D.![]() ![]() |
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【推荐2】已知
,
是
上的两个动点,且
.设
,
,线段
的中点为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c2a59c9d7e3c7b179eaa1b14745bbd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84cef568cfe2fc12a4dec11533ada274.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
A.![]() |
B.点![]() ![]() |
C.![]() |
D.![]() ![]() |
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【推荐3】在
中,
,且
,
是
所在平面内的一点,设
,则以下说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a32b1212550e08c88b82aef7803bef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4668059a2305531e11ce20c08f20dd9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09fcd2216aeaea44adf813abea45fda7.png)
A.![]() |
B.若![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次