解题方法
1 . 如图,在直棱柱
中,底面
是直角梯形,
,
,点P在面
上,过点P和棱
的平面把直棱柱分成体积相等的两部分.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/db1b4db3-6bb7-4acd-a7b7-79a1eafc6815.png?resizew=192)
(1)求截面与直棱柱的侧面
所成角的正切值;
(2)求棱
到截面的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e00bd19cca1a601759171ad518e67acf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a929d7e316b283cd87094764b4678981.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebb05874eb3353d754af24c9974273e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/db1b4db3-6bb7-4acd-a7b7-79a1eafc6815.png?resizew=192)
(1)求截面与直棱柱的侧面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
(2)求棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
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2 . 如图,
是圆
的直径,
圆
所在的平面,
为圆周上一点,
为线段
的中点,
,
.
![](https://img.xkw.com/dksih/QBM/2022/1/13/2893775135039488/2896413231874048/STEM/5c78035e-bc9c-4ee3-bc39-4c2bbc6bc4e5.png?resizew=218)
(1)证明:平面
平面
.
(2)若
为
的中点,
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ca0b614cdcebac47b434db4aa75b518.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ff7ad82b0938145af6a5ffa2c9596d8.png)
![](https://img.xkw.com/dksih/QBM/2022/1/13/2893775135039488/2896413231874048/STEM/5c78035e-bc9c-4ee3-bc39-4c2bbc6bc4e5.png?resizew=218)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf6dc837ae85207789b94d109c5c2eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ee01e28681b584f85c8875f053b77b.png)
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2022-01-17更新
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4卷引用:新疆昌吉州2022届高三上学期第二次高考质量检测数学(文)试题
3 . 如图所示,在四棱锥P-ABCD中,PC⊥底面ABCD,
,
,
,E是PB的中点.
![](https://img.xkw.com/dksih/QBM/2022/1/13/2893674887897088/2895068048809984/STEM/807eedb3-7a6b-4d1b-b655-7ebf2014b56f.png?resizew=184)
(1)求证:
平面PAD;
(2)若
,求三棱锥P-ACE的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fd3c2e2199cd4565c05b949bc21fc37.png)
![](https://img.xkw.com/dksih/QBM/2022/1/13/2893674887897088/2895068048809984/STEM/807eedb3-7a6b-4d1b-b655-7ebf2014b56f.png?resizew=184)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/932a04304f2d4975955d4baabb2deeea.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2899e607479d8d1c47d954ae9ebb7144.png)
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2022-01-15更新
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551次组卷
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2卷引用:新疆维吾尔自治区2022届高三年级第一诊断性测试数学(文)试题(问卷)
2022高三·全国·专题练习
4 . 如图,在四棱锥
中,平面
平面
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/12/8aee5aab-2eb8-4b8c-8f86-4537ac185017.png?resizew=140)
(1)证明:
平面
;
(2)求二面角
的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5164a3cc47e266446d49127e2ef10c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e73ff18fab460a2bc8d21cc522527e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/292d0b9ce587bd5df884a988c22ccba2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd316249a2a4333a6e37ea6ba4c0e67b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71807a35b3170fce28ee6edf4c00d083.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/12/8aee5aab-2eb8-4b8c-8f86-4537ac185017.png?resizew=140)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d2d217e9bcd059908f117dfc4d4259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd29cc627d76412c236aac6b29fa0fdf.png)
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名校
解题方法
5 . 如图,在三棱锥
中,
,M为PB的中点,D为AB的中点,且
为正三角形
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/23/fb131d8d-cc97-4633-97c3-254774ba84c9.png?resizew=167)
(1)求证:
平面PAC
(2)若
,三棱锥
的体积为1,求点B到平面DCM的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9be272b16df732d93adc4d6cc5e266ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4b0c4b339f44bbac0e275eb0718234.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/23/fb131d8d-cc97-4633-97c3-254774ba84c9.png?resizew=167)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d3a44d5001ed4f043d1cf1e1842ee42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
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2022-09-21更新
|
845次组卷
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7卷引用:【全国市级联考】新疆乌鲁木齐地区2018届高三5月适应性训练数学文试题
【全国市级联考】新疆乌鲁木齐地区2018届高三5月适应性训练数学文试题广东省化州市2018届高三上学期第二次高考模拟考试数学(文)试题(已下线)2017-2018学年度下学期高一数学期末备考总动员A卷贵州省遵义市绥阳中学2019届高三模拟卷(一)文科数学试题2019届福建省福州第一中学高三上学期开学质检数学(文)试题(已下线)9.4 空间角与空间距离广东省广州市番禺区实验中学2022-2023学年高二上学期期中数学试题
6 . 如图,在多面体
中,
为等边三角形,
,
,
,
,F为EB的中点.
![](https://img.xkw.com/dksih/QBM/2022/3/1/2926877487308800/2933299548504064/STEM/b88ad9ac49004acfb468a652d127d1ff.png?resizew=210)
(1)证明:
平面
;
(2)求多面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/164a4df60a15587971e883cf557b5ce2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af620f6d204d310d8e3f267fdd6c3f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1394fc01d91ffe8e6826cab0c933be3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee90881c743e2cff2e3128d6bdb86174.png)
![](https://img.xkw.com/dksih/QBM/2022/3/1/2926877487308800/2933299548504064/STEM/b88ad9ac49004acfb468a652d127d1ff.png?resizew=210)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9c89e28bb3b5ce434e8ebea6363339.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/678b28fddb166d90878d24d6e5481080.png)
(2)求多面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
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2022-03-10更新
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719次组卷
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9卷引用:新疆昌吉州2022届高三下学期高考适应性第一次诊断性测试数学(文)试题
新疆昌吉州2022届高三下学期高考适应性第一次诊断性测试数学(文)试题湖南省五市十校2018-2019学年高二下学期期末联考数学(文)试题1湖南省五市十校2018-2019学年高二下学期期末联考数学(文)试题2(已下线)2019年12月27日《每日一题》-直线、平面平行的判定及其性质广东省阳春市第一中学2022届高三上学期第四次月考数学试题陕西省铜川市耀州中学2022届高三下学期热身冲刺考文科数学试题河南省鹤壁市浚县第一中学2022-2023学年高三上学期11月考试文科数学试题四川省内江市第六中学2022-2023学年高二下学期入学考试文科数学试题四川省内江市第六中学2022-2023学年高二下学期入学考试理科数学试题
7 . 如图所示,四棱锥
中,
菱形
所在的平面,
,点
、
分别是
、
的中点.
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712254096621568/2730937546465280/STEM/0562170b74e7444a9f78f4b7def8759a.png?resizew=213)
(1)求证:平面
平面
;
(2)当
时,求多面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712254096621568/2730937546465280/STEM/0562170b74e7444a9f78f4b7def8759a.png?resizew=213)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6501f1c913a4ef64957a2f01ab5baa15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e141dae4d71b9b5de145ee99b2741586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd06964bc180eeb26209b77a69ab763e.png)
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2021-05-28更新
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1181次组卷
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3卷引用:新疆维吾尔自治区2021届高三年级第二次诊断性测试数学(文)试题(问卷)
新疆维吾尔自治区2021届高三年级第二次诊断性测试数学(文)试题(问卷)(已下线)专题01 立体几何求体积-【解题思路培养】2022年高考数学一轮复习解答题拿分秘籍(全国通用版)陕西省咸阳市2022届高三下学期二模文科数学试题
名校
解题方法
8 . 如图,已知四棱锥
中,
分别是
的中点,
底面
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5409942c6a29b7f347e22ed656e4d1b3.png)
![](https://img.xkw.com/dksih/QBM/2021/5/11/2718965672411136/2720728923897856/STEM/e130e9f364104801bde24b28b84e692d.png?resizew=224)
(1)证明:
平面
;
(2)若
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a3842f9e99b71d9fc4baa9c471a3da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cd5e413cb380bfad5af472412236775.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5409942c6a29b7f347e22ed656e4d1b3.png)
![](https://img.xkw.com/dksih/QBM/2021/5/11/2718965672411136/2720728923897856/STEM/e130e9f364104801bde24b28b84e692d.png?resizew=224)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/373f735f0f04d11f1951eaef1bb78b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/345368a256c743818a7ca1487ae4c4f4.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae890f9e8b32aa53a54158f24f4a87bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4b5e0b8c35a7d9b3d68db8e5c89b8bd.png)
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2021-05-14更新
|
1206次组卷
|
6卷引用:新疆维吾尔自治区布尔津县高级中学2021届高三三模数学(文)试题
解题方法
9 . 如图,四棱锥
的底面为正方形,所有棱长都是
,
,
,
分别是棱
,
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/032c6094-e5ca-4481-84b4-ff70951ae2d2.png?resizew=168)
(1)求过
,
,
三点的平面截棱锥所得截面的面积;
(2)设过
,
,
三点的平面为
,求
与平面
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/032c6094-e5ca-4481-84b4-ff70951ae2d2.png?resizew=168)
(1)求过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
(2)设过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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