2020高二·浙江·专题练习
名校
1 . 在斜边长为4的等腰直角三角形
中,点
在斜边
(不含端点)上运动,将
沿线段
折到
位置,则三棱锥
体积的最大值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db5e1441a49e782ff0ef46e776cde06a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49e2a5a8708c06d509c766863a4d6279.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08a9ec3b527947cad9caa4537e0cb7e7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/35ca5441-f6d3-495a-8f60-7bc87b65d556.png?resizew=214)
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2020高二·浙江·专题练习
2 . 设
是一个高为3,底面边长为2的正四棱锥,
为
中点,过
作平面
与线段
,
分别交于点
,
(可以是线段端点),则四棱锥
的体积的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f11969bbf853d6a703eac037566f3e5.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b248cd1f6a71371cf38374c7a4c74d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020高二·浙江·专题练习
名校
3 . 已知,矩形
中,
,
,
,
分别为边
,
上的定点,且
,
,分别将
,
沿着
,
向矩形所在平面的同一侧翻折至
与
处,且满足
,分别将锐二面角
与锐二面角
记为
与
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94c234ee1b4b5a029315bf19b202b24b.png)
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7788830ed1cb3b9c5988f70f43595f2e.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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2f12c8e863e2661cb4a4b4138b06101.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59e855c354ab71fdc3c46cd6f82ced40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc3814287dbb60d478bffc5366f9928b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8414369aceaa4231d66c698380926b14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/353732838789714499619085201305c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0dac1e1daa23b6749481833364b9cf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a1d576d84c4de1687202e17b09afbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b380cc8844a515f1dab9c5d5dc5ec03c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5784937779b99c1b9227bf690115e8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f64fa38725c136504f723019a18dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e93fa313adc4ac7608ba9449fd755212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94c234ee1b4b5a029315bf19b202b24b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d80722f802e310db388ee05d2a55c673.png)
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4 . 如图,在矩形
中,
为边
的中点,将
沿直线
翻转成
.若
为线段
的中点,则在
翻转过程中,正确的命题是______ .(填序号)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/daad2b2e-18ce-4d6b-8cd8-d4ae4ae00975.png?resizew=173)
①
是定值;
②点
在圆上运动;
③一定存在某个位置,使
;
④一定存在某个位置,使
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f460edcced5597615113c0fdc95b1dfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f07107087ce4abdfa5fc68fe6fb62f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f460edcced5597615113c0fdc95b1dfc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/daad2b2e-18ce-4d6b-8cd8-d4ae4ae00975.png?resizew=173)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
②点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
③一定存在某个位置,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2181c78134c310f746eab44b9124e63b.png)
④一定存在某个位置,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6461351a98e0186b5bdbf61ac39ee55a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/657dffbd3623b705f871878fbd9df57e.png)
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2020高二·浙江·专题练习
5 . 已知直线
经过点
,且与
轴正半轴交于点
,与
轴正半轴交于点
,
为坐标原点.
(1)若点
到直线
的距离为4,求直线的方程;
(2)求
面积的最小值;
(3)在题(2)
的面积取最小值的条件下,保持直线
不动,从直线
上的任意一点
作圆
,
的切线
、
(
,
为切点),求弦
长度的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d00d5d8cc31aaca7fc2eafb99eac7629.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8189f7b0ffe4d20bf0fad43b4ed589.png)
(3)在题(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8189f7b0ffe4d20bf0fad43b4ed589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8305c4ffbf876642440c3d28e91e9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce2790947716b1cfa9c5e7a65db4093.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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6 . 若直角三角形的斜边与平面
平行,两条直角边所在直线与平面
所成的角分别为
和
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f64fa38725c136504f723019a18dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e93fa313adc4ac7608ba9449fd755212.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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7 . 高为1的正三棱锥
的底面边长为
,二面角
与二面角
之和记为
,则在
从小到大的变化过程中,
的变化情况是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47d294d69caac577339f11f477b2047e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b33b7213d99a817bff19bcf740a0697c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
A.一直增大 | B.一直减小 | C.先增大后减小 | D.先减小后增大 |
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2020高二·浙江·专题练习
名校
8 . 在平面直角坐标系
中,过点
作直线与两条直线
,
交于
,
两点,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54bb0f127d51bcb1b6ecd5556aa70853.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bce9bdeb6b4e2401d9907f4e3f0c540.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dc20ecfb48de46ccba10337431d7fe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267193e06c70d4d7fb8870f7bb875f9a.png)
A.![]() | B.10 | C.![]() | D.![]() |
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2020高二·浙江·专题练习
名校
9 . 已知正四面体纸盒的俯视图如下图所示,其中四边形ABCD是边长为2的正方形,若在该正四面体纸盒内放一个正方体,使正方体可以在纸盒内任意转动,则正方体棱长的最大值是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/cb2e4e53-a2bb-4e97-9747-4548e8d689b1.png?resizew=149)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/cb2e4e53-a2bb-4e97-9747-4548e8d689b1.png?resizew=149)
A.![]() | B.![]() | C.![]() | D.![]() |
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(已下线)【新东方】杭州高二数学试卷233(已下线)【新东方】杭州高二数学试卷242浙江省杭州市高级中学2019-2020学年高二上学期期中数学试题(已下线)【新东方】杭州新东方高中数学试卷338(已下线)【新东方】杭州新东方高中数学试卷353(已下线)三省三校2022届高三下学期第一次模拟数学(理)试题变式题11-15四川大学附属中学(四川省成都市第十二中学)2022—2023学年高三下学期二诊热身考试理科数学试题
2020高二·浙江·专题练习
名校
10 . 如图,在平面直角坐标系
中,已知圆O:
,过点
且斜率为k的直线l与圆O交于不同的两点A,B,点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/5042c9ee-bd0a-4184-8fa3-f7219cd59495.png?resizew=185)
(1)若直线l的斜率
,求线段AB的长度;
(2)设直线QA,QB的斜率分别为
,
,求证:
为定值,并求出该定值;
(3)设线段AB的中点为M,是否存在直线l使
,若存在,求出直线l的方程,若不存在说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6e298293515d3c5d8343b668fe8541d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96851165a69aea97838d5d48dd9a620.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/5042c9ee-bd0a-4184-8fa3-f7219cd59495.png?resizew=185)
(1)若直线l的斜率
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc66cd5ccd5a579a42c6a241c62d764.png)
(2)设直线QA,QB的斜率分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69e3f7ddd51215d00661c09cd900d60.png)
(3)设线段AB的中点为M,是否存在直线l使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ad83bcf0635b447bd4e95a4be34bf19.png)
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