在平行四边形
中,
,
为
的中点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73f5d4492089b880fbb8601d4db36734.png)
_______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d30aa73ca876ed5fa58d3a5db74619db.png)
________ .(用
表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aa0ce50f744de6026cc00566ccc7bb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73f5d4492089b880fbb8601d4db36734.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d30aa73ca876ed5fa58d3a5db74619db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
19-20高一上·浙江杭州·期中 查看更多[3]
浙江省杭州市外国语学校2019-2020学年高一上学期期中数学试题(已下线)第10练 平面向量线性运算,坐标运算-2021年高考数学一轮复习小题必刷(山东专用)(已下线)专题6.1 平面向量及其线性运算(B卷提升篇)-2020-2021学年高一数学必修第二册同步单元AB卷(新教材人教A版,浙江专用)
更新时间:2020-03-22 21:44:59
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【推荐1】在△
中,
,直线
为
中垂线,在
上的任取一点
,记
,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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【推荐2】向量加法的几何作法:
(1)三角形法则的步骤:
①____________ ﹔②___________ ﹔③___________ . 故
就是所作的
.
(2)平行四边形法则的步骤:
①____________ ﹔②___________ ﹔③____________ . 故
就是所作的
.
(1)三角形法则的步骤:
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68628a408537b1cf3bf1ca2a69731b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/287ad9609eeb0843d9dbc413138f9c37.png)
(2)平行四边形法则的步骤:
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20ec3efaa6b6ff5769e8999df5714a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/287ad9609eeb0843d9dbc413138f9c37.png)
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【推荐1】下列说法中正确的是__ .
①单位向量都共线;
②若
,则
∥
;
③若|
|>|
|>|
|,则|
|>|
|;
④|
|≤|
|且|
|≤|
|.
①单位向量都共线;
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/778542d99ab19e2ecc0c7ef75161f133.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
③若|
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d8fbb7258ee051f49977441e14a2.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eec87721e0e075cb63667602cb00ad8a.png)
④|
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bca35e52b8430246a1cf96e9e617cce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cd8bbf47b69bbd7a6263b041290d11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
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【推荐2】古代典籍《周易》中的“八卦”思想对我国的建筑有一定影响.图1是受“八卦”启示设计的正八边形的八角窗.在正八边形
中,若
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______ .
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