名校
解题方法
1 . 在三棱锥
中,
,
,
,则三棱锥
的外接球的表面积为()
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca344881c4676794995769870e445be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efcaf5889c962ff958903404db57c168.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9438b896d27422c2eee913522e3cca60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 已知正三棱台的上底面与下底面的面积之比为1:4,当棱台的高为2,体积为
时,则此时正三棱台的侧面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fcb5876e83a663aa11bc213425f2345.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 已知圆锥的顶点为
,母线长为2,轴截面为
,若
为底面圆周上异于
的一点,且二面角
的大小为
,则
的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50bd788e91d8a2691ad7f8d0cb796814.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf29d07c3751c41ab3503065a5a5052e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fbfcae2cecc98e2d6c16dde6d3ec1c1.png)
A.2 | B.3 | C.![]() | D.![]() |
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4 . 已知
是两条不同的直线,
是两个不同的平面,则下列命题错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
A.若![]() ![]() ![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() |
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5 . 《几何补编》是清代梅文鼎撰算书,其中卷一就给出了正四面体,正六面体(立方体)、正八面体、正十二面体、正二十面体这五种正多面体的体积求法.若正四面体
的棱长为
,
为棱
上的动点,则当三棱锥
的外接球的体积最小时,三棱锥
的体积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5d90f940f5693b22ddf2e7c761887d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5d90f940f5693b22ddf2e7c761887d8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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昨日更新
|
221次组卷
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4卷引用:河北省沧州市部分示范性高中2024届高三下学期三模数学试题
河北省沧州市部分示范性高中2024届高三下学期三模数学试题河北省沧州市盐山中学2024届高三三模数学试题(已下线)核心考点8 立体几何中综合问题 A基础卷 (高一期末考试必考的10大核心考点) 海南省2020-2021学年高二下学期期末考试数学试题
名校
解题方法
6 . 设
,
,
是互不重合的平面,
,
是互不重合的直线,给出四个命题:
①若
,
,则
②若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a93a52c2b943e4c70ace99ed802d2b5.png)
③若
,
,则
④若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4042f9c51f83e3367d496e851735d7f9.png)
其中正确命题的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4042f9c51f83e3367d496e851735d7f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79018590293277ff2d76452a50ad2dbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a93a52c2b943e4c70ace99ed802d2b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/008241f4c7f47526109c74c92ed21fdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88182084a712c7f0a34540b16b95c477.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a93a52c2b943e4c70ace99ed802d2b5.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4042f9c51f83e3367d496e851735d7f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b59b1a01a6da42ff2a41e5b91ea301ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b6e422b2e6f6dada4d8c369559a077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a93a52c2b943e4c70ace99ed802d2b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79018590293277ff2d76452a50ad2dbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4042f9c51f83e3367d496e851735d7f9.png)
其中正确命题的个数是( )
A.1 | B.2 | C.3 | D.4 |
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7 . 如图,在圆锥SO的底面圆中,AC为直径,O为圆心,点B在圆O上,且
,D为线段AB上的动点,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30d66123e91d274c45009a72603ab800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6856cb8587f8f2001c378cd4012e3b7.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7日内更新
|
375次组卷
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4卷引用:河北省保定市定州市第二中学2023-2024学年高一下学期5月月考数学试题
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8 . 已知m,n,l是三条不同的直线,
是两个不同的平面,
∥
,则下列命题正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d9f808eebe04dad32805508de98c284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
A.![]() ![]() | B.![]() ![]() | C.![]() | D.![]() |
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7日内更新
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4卷引用:河北省保定市定州市第二中学2023-2024学年高一下学期5月月考数学试题
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9 . 艳阳高照的夏天,“小神童”是孩子们喜爱的冰淇淋之一.一个“小神童”近似为一个圆锥,若该圆锥的侧面展开的扇形面积是底面圆面积的2倍,圆锥的母线长为
,则该圆锥的体积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/689ff84e2d7f52c7446ef789a54557da.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 故宫角楼的屋顶是我国十字脊顶的典型代表,如图1,它是由两个完全相同的直三棱柱垂直交叉构成,将其抽象成几何体如图2所示.已知三楼柱
和
是两个完全相同的直三棱柱,侧棱
与
互相垂直平分,
交于点I,
,
,则点
到平面
的距离是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5399fca789fea184a162bfb6d95afd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f523fc81603a5c4cdff956a5c3298b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8856a6bbd1648fef7aaa384366e9016f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df32f10590eccf0d07989db09ad7d48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c507610f462120218e2cd1894c957eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd4b93d7abcfc4c3df48f03aa969c17f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-06-10更新
|
437次组卷
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3卷引用:2024届河北省承德市部分示范高中高三三模数学试题