解题方法
1 . 如图,在平行六面体
中,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/15/86de3ee0-071b-4c8e-b591-625fa67ee6b3.png?resizew=167)
(1)求
的长;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6539b62084f39afabcd9b93c2c562b7e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/15/86de3ee0-071b-4c8e-b591-625fa67ee6b3.png?resizew=167)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aa142bb96af98b846997e681609739f.png)
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解题方法
2 . 如图,已知平行六面体
中,底面
是边长为2的正方形,
,
,设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32892bd69becbeaf4c18f0874e981fbe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/6a114a04-0e09-4c99-97c4-20118d055be8.png?resizew=248)
(1)用
表示
,并求
;
(2)求AC1与BD所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd694ad3a4733c7c84aaa7946aeea4de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c47b3e7435856bedf495e1e859be631.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad6ed75fc5022a5d53bf64ec481dfe73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32892bd69becbeaf4c18f0874e981fbe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/6a114a04-0e09-4c99-97c4-20118d055be8.png?resizew=248)
(1)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d189ba56ed46476376bb15266540cfef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4feafb6ff8a0f0ea0fe6d3b55eb499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5db065ca9e06774313be2ba4a6e39280.png)
(2)求AC1与BD所成角的大小.
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2022-10-28更新
|
468次组卷
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3卷引用:山西省长治市第二中学校2022-2023学年高二上学期第一次月考数学试题
2022高二上·全国·专题练习
3 . 在平行六面体(底面是平行四边形的四棱柱)
中,
,
,求
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cead0e8eadfdcefa334953e88864f424.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be560befd3ac8e670f8b6edd15edf31d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://img.xkw.com/dksih/QBM/2022/7/15/3023223465271296/3024415322349568/STEM/ded218df3ff44c328bdc77d00a734f6a.png?resizew=213)
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4 . 已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
,求:
(1)(
-
)·(
+
);
(2)以
,
为邻边的平行四边形的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5c8c3d9d6c1fcfbee08afc7345e7568.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2446e972f7f74fc97753eeb6075b6b38.png)
(1)(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cb0765070f02f465452e3331dfad09f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bce096a0c43331a03dc7a5edcb4a8348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
(2)以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
您最近一年使用:0次
2020-03-22更新
|
374次组卷
|
3卷引用:山西省山西大学附属中学校2022-2023学年高二上学期11月期中考试数学试题