名校
1 . 某三棱锥的三视图如图所示,则该几何体的体积为
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/ce9b0532-19ed-4bb1-8722-864ce5245a76.png?resizew=194)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/ce9b0532-19ed-4bb1-8722-864ce5245a76.png?resizew=194)
A.![]() | B.![]() | C.4 | D.8 |
您最近一年使用:0次
2019-01-28更新
|
503次组卷
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4卷引用:北京市昌平区新学道临川学校2019-2020学年高三上学期期末数学(文)试题
北京市昌平区新学道临川学校2019-2020学年高三上学期期末数学(文)试题【市级联考】河北省唐山市2019届高三上学期期末考试A卷数学试题广西柳州市二中2018-2019学年高一下学期第一次月考数学试题(已下线)专题04 三视图-2020年高考数学母题题源解密(北京专版)
2 . 在三棱柱
中,
,
为
中点,
底面
,点
在线段
上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/5e7d6fe2-fb5d-4a06-8ce9-3f077021029f.png?resizew=246)
(1)证明:
;
(2)若
,
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c1ad2917b716db41c03e670f77d411d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70890da7dff5f8600b295e54b665638d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/5e7d6fe2-fb5d-4a06-8ce9-3f077021029f.png?resizew=246)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71f03f92620e2663e49cc98d2303908c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce78c975ff520557d080e7fbae76d01c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e16368cd7cd132082fc9d6dbf6266bc1.png)
您最近一年使用:0次
2019-01-28更新
|
512次组卷
|
2卷引用:北京市昌平区新学道临川学校2019-2020学年高三上学期期末数学(理)试题
3 . 某四棱锥的三视图如图所示,则其体积为
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/70d59399-b84c-4bef-baf1-ca880f5520c4.png?resizew=166)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/70d59399-b84c-4bef-baf1-ca880f5520c4.png?resizew=166)
A.![]() | B.![]() | C.8 | D.4 |
您最近一年使用:0次
2019-01-28更新
|
399次组卷
|
3卷引用:北京市昌平区新学道临川学校2019-2020学年高三上学期期末数学(理)试题
北京市昌平区新学道临川学校2019-2020学年高三上学期期末数学(理)试题【市级联考】河北省唐山市2019届高三上学期期末考试A卷数学(理)试题(已下线)专题05 少丢分题目强化卷(第二篇)-备战2021年新高考数学分层强化训练(北京专版)
4 . 某多面体的三视图如图所示,则该多面体的体积是
![](https://img.xkw.com/dksih/QBM/2018/7/23/1994749551935488/1995909767553024/STEM/47f1426384b6420f8d73276274a38d51.png?resizew=162)
![](https://img.xkw.com/dksih/QBM/2018/7/23/1994749551935488/1995909767553024/STEM/47f1426384b6420f8d73276274a38d51.png?resizew=162)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2018-08-08更新
|
454次组卷
|
3卷引用:北京市昌平区2017-2018学年第二学期高一年级期末考试质量检测数学试题
5 . 在平面直角坐标系
中,过点
的直线与圆
交于
两点,当
的面积最大时,线段
的长度为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2beb91f10d2d8f2aa0dcc3f5cd1598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4bbf7acc38d391682378a7509dc04d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/398a1bc39987b757434125394ab7487a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ae1567d8f98fabc1a3948f8602cc5e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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6 . 已知圆
,直线
过点
且与圆
相切 .
(I)求直线
的方程;
(II)如图,圆
与
轴交于
两点,点
是圆
上异于
的任意一点,过点
且与
轴垂直的直线为
,直线
交直线
于点
,直线
交直线
于点
,求证:以
为直径的圆
与
轴交于定点
,并求出点
的坐标 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560adea7b0d4fbe4131fc41f3fcbd871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f2b1f4120365cb6ee4925fe417563f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(I)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(II)如图,圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b1b15a4605fce993cb13aefbf40360.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8305c4ffbf876642440c3d28e91e9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/5/bfd28790-e7b5-43f4-824b-e76c1b366702.png?resizew=141)
您最近一年使用:0次
2018-07-25更新
|
2071次组卷
|
3卷引用:北京市昌平区2017-2018学年第二学期高一年级期末考试质量检测数学试题
7 . 如图,在棱长为1的正方体
中,
为线段
的中点,
为线段
上一动点.
(Ⅰ)求证:
;
(Ⅱ)当
时,求三棱锥
的体积;
(Ⅲ)在线段
上是否存在一点
,使得
平面
?说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd694ad3a4733c7c84aaa7946aeea4de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a097e367a5df43295a28a2f16bdfe95f.png)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aac003cb7900e8decc6ed77e54c0a6d2.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da437ba8cd14938b5f9b611da181210.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9b7df18c65fd2be60da013ca351d830.png)
(Ⅲ)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a097e367a5df43295a28a2f16bdfe95f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a67b1456241151b9b78712880c38b752.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd73bb46d3fb6f970ede588bc10d90ff.png)
![](https://img.xkw.com/dksih/QBM/2018/7/23/1994749551935488/1995909767757824/STEM/af3b4e8a93684ae9a717d271d46b4901.png?resizew=190)
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8 . 如图,在三棱锥
中,
,
,点
分别为
的中点.
(Ⅰ)求证:
;
(Ⅱ)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc2aaed1e9ead175f30f7130569d0411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/033dcdb8b4d8a9411dbb0941686ce470.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b71053b2dba1f1d12805269920eb68d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/702e61ac15503475f4a0965564d62f3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac76d58dc1449b42a73432772ca8364.png)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2439042564956ef094805e0d8a970eb.png)
(Ⅱ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d5cefd02d5882b86b82e0e0c50fc2d1.png)
![](https://img.xkw.com/dksih/QBM/2018/7/23/1994749551935488/1995909767675904/STEM/1a9be4a2c5394f9894b16ccdf9928d03.png?resizew=163)
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9 . 在平面直角坐标系
中,
为坐标原点,点
,动点
满足
,则点
轨迹方程为_________________________ ;若动点
在圆
上,则
的取值范围为______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc878a5fd7b508cf817cbb65d3940547.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed154dc722c0576255346d7f237969ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/103e703e721270646bba37309d21d5a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
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10 . 已知直线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d35d1db20d89c8f4596e92ceb977a16.png)
互相垂直,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d35d1db20d89c8f4596e92ceb977a16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c13645aef2a52e84b1ed719d6191e66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2018-07-25更新
|
1286次组卷
|
7卷引用:北京市昌平区2017-2018学年第二学期高一年级期末考试质量检测数学试题