名校
解题方法
1 . 如图,在四棱锥
中,
,
,
,
平面
,E为PD的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/b473418a-2d80-4fb1-bb41-57257e6b4a1f.png?resizew=159)
(Ⅰ)证明:
平面
;
(Ⅱ)若
,求点E到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/810227b082bd14dbcde85c3181841571.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/b473418a-2d80-4fb1-bb41-57257e6b4a1f.png?resizew=159)
(Ⅰ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31c34b18525831f3eda7bb90be0199b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/672757753ee4387ac9ce54467663a82c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
2021-08-12更新
|
1074次组卷
|
7卷引用:天一大联考2021届高三文科数学阶段性测试试题(二)
20-21高二上·江西南昌·阶段练习
2 . 如图所示,在正方体
中,点G在棱
上,且
,点
、
、
分别是棱
、AB、BC的中点,P为线段
上一点,
.
![](https://img.xkw.com/dksih/QBM/2020/11/1/2583456102907904/2583535576391680/STEM/82bcf07b840242dc9c2d9a0ad9f2e648.png?resizew=185)
(Ⅰ)若平面
交平面
于直线
,求证:
;
(Ⅱ)若直线
平面
.
(ⅰ)求三棱锥
的表面积;
(ⅱ)设平面
与棱
交于点Q,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fbafedc202bd0d86c4dfdece9f8f4fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f01d1dd10776b00e9df008f03f2608c.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cdc08e1c4a04a18d5ecea03393e36d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://img.xkw.com/dksih/QBM/2020/11/1/2583456102907904/2583535576391680/STEM/82bcf07b840242dc9c2d9a0ad9f2e648.png?resizew=185)
(Ⅰ)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7a447dc58e10adb7c8014071651e7c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b54387f870ae37f7951b253665d64f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22ba669c69462fbbff2ef12ea9015fc8.png)
(Ⅱ)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/565133e91e3ace2b2187cfc6f1db5be6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7a447dc58e10adb7c8014071651e7c9.png)
(ⅰ)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b03980f99fa0f339388e564466e8b94.png)
(ⅱ)设平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbf62b9fe96ad0b0f58c8b3ba3075ab5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a4a7ba7546acc68f9cff46f1c53557f.png)
您最近一年使用:0次
名校
3 . 如图,在四棱锥S-ABCD中,底面ABCD是菱形,
,
为等边三角形,G是线段SB上的一点,且SD//平面GAC.
![](https://img.xkw.com/dksih/QBM/2020/3/5/2412900907646976/2416012291588096/STEM/ad120724-3b23-4e3d-806e-96b20e8aa732.png)
(1)求证:G为SB的中点;
(2)若F为SC的中点,连接GA,GC,FA,FG,平面SAB⊥平面ABCD,
,求三棱锥F-AGC的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25df618ec33cee978f79d2eae62024f2.png)
![](https://img.xkw.com/dksih/QBM/2020/3/5/2412900907646976/2416012291588096/STEM/ad120724-3b23-4e3d-806e-96b20e8aa732.png)
(1)求证:G为SB的中点;
(2)若F为SC的中点,连接GA,GC,FA,FG,平面SAB⊥平面ABCD,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
您最近一年使用:0次
2020-03-09更新
|
517次组卷
|
5卷引用:江西省上饶中学2018-2019学年高一下学期第一次月考数学(理科)试题
名校
4 . 如图,在棱长为a的正方体ABCD-A1B1C1D1中,M,N分别是AA1,D1C1的中点,过D,M,N三点的平面与正方体的下底面A1B1C1D1相交于直线l.
![](https://img.xkw.com/dksih/QBM/2019/12/16/2356356384268288/2357353698623488/STEM/4a92b979-f410-4d8e-aaf6-c92967a64541.png)
(1)画出直线l的位置,并简单指出作图依据;
(2)设l∩A1B1=P,求线段PB1的长.
![](https://img.xkw.com/dksih/QBM/2019/12/16/2356356384268288/2357353698623488/STEM/4a92b979-f410-4d8e-aaf6-c92967a64541.png)
(1)画出直线l的位置,并简单指出作图依据;
(2)设l∩A1B1=P,求线段PB1的长.
您最近一年使用:0次
名校
5 . 如图,四棱锥
中,底面
是直角梯形,
,
,
,侧面
是等腰直角三角形,
,平面
平面
,点
分别是棱
上的点,平面
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(Ⅰ)确定点
的位置,并说明理由;
(Ⅱ)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/222c1cc813baab298d8ae55406eccda4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e4d19bf237a6fca67e0d01a9ddb726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40c2013527c6089d7df59bca21a4598c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b9658dd92f4bc8ec3d68534e48e16a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(Ⅰ)确定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
(Ⅱ)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad15911cb2cd8730c08f20e80644ccf.png)
![](https://img.xkw.com/dksih/QBM/2018/5/19/1948846080688128/1949920916963328/STEM/dd677dc577284734ba2ab69d82b6e97a.png?resizew=212)
您最近一年使用:0次
2018-05-21更新
|
878次组卷
|
7卷引用:【全国市级联考】江西省南昌市2018届高三第二次文科数学模拟试题
【全国市级联考】江西省南昌市2018届高三第二次文科数学模拟试题江西省南昌市师大附中2019届高三数学(文科)二模试题(已下线)专题8.4 直线、平面平行的判定及其性质(讲)【文】-《2020年高考一轮复习讲练测》(已下线)专题8.4 直线、平面平行的判定及其性质(讲)-江苏版《2020年高考一轮复习讲练测》广东省广州市增城区四校2017-2018学年高一下学期期末联考数学试题(已下线)【新教材精创】11.3.3平面与平面平行(第2课时)练习(1)(已下线)专题8.4 直线、平面平行的判定及性质 (精练)-2021年高考数学(文)一轮复习学与练
解题方法
6 . 如图,四棱锥
中,
底面
,
为直角梯形,
与
相交于点
,
,
,
,三棱锥
的体积为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/22/c823112f-b58a-4cb0-a379-b9625ec902f5.png?resizew=232)
(1)求
的值;
(2)过
点的平面
平行于平面
,
与棱
,
,
,
分别相交于点
、
、
、
,求截面
的周长.
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9060f03b9ee41d70d135b1e1a8902ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2886b0c6d95ff67f6f8e4859c83ac20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c482ee1668a59ca21f3ae8b6bad58eae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d02ea8c4988c5c28ab93f0d70fb55a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/22/c823112f-b58a-4cb0-a379-b9625ec902f5.png?resizew=232)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.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/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
您最近一年使用:0次
7 . 如图,在五面体
中,
,
,
,
,平面
平面
,
是
的中点.
(1)求异面直线
与
所成角的余弦值;
(2)在直线
上,是否存在一点
,使得
平面
,若存在,求出该点;若不存在请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c75d8581bb7b2a91795852acdc07d68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b66d0c4532b4e7826e61fa718b28153.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/def212da83f08df1309c9833521e2a8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb5a68a008a22d5a8cea5fe8dcf31e10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(1)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
(2)在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e01739fdd26c48a30257999ce449ed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65277734669566578cbb7d690bb200fb.png)
您最近一年使用:0次
名校
解题方法
8 . 如图,四棱柱
中,
底面
,四边形
为梯形,
,且
,
为
的中点,过
三点的平面记为
.
(Ⅰ)证明:平面
与平面
的交线平行于直线
;
![](https://img.xkw.com/dksih/QBM/2017/5/17/1688962389204992/1689505977835520/STEM/749982a9-901d-4edd-9011-ad2c9f13f56a.png?resizew=176)
(Ⅱ)若
,
,求平面
与底面
所成二面角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ecf072589c0f901d92f6bda111d841.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e839ac941e8bf536ff35a12e56c7a400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58686e417f5d9cbfa8ef97e180af9f1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(Ⅰ)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/2017/5/17/1688962389204992/1689505977835520/STEM/749982a9-901d-4edd-9011-ad2c9f13f56a.png?resizew=176)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/604ea9581e49ea3531d5f82349e61553.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea9f9fcdffb61b5366a158ebd115cd3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2017-05-18更新
|
908次组卷
|
7卷引用:安徽省马鞍山市2017届高三第三次模拟数学(理)试题
名校
解题方法
9 . 如图,
是底面边长为2,高为
的正三棱柱,经过
的截面与上底面相交于
, 设
.
(1)证明:
;
(2)当
时,在图中作出点C在平面
内的正投影
(说明作法及理由),并求四棱锥
表面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d439d2495c2892a027defb2c0af9de84.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/084a603339538b09f310e3c18cbeb3c9.png)
(2)当
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76abe46a47830d6b15e7b7fda18bf0d1.png)
![](https://img.xkw.com/dksih/QBM/2017/2/28/1633793164271616/1634656375914496/STEM/45dc158673844033873074125a9e0f28.png?resizew=196)
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