解题方法
1 . 如图,圆台O2O2中,母线AB与下底面所成的角为60°,BC为上底面直径,O2A=6O1B=6,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/6/0efd94e7-a155-42d3-ad04-2dc265ff49d4.png?resizew=198)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/6/0efd94e7-a155-42d3-ad04-2dc265ff49d4.png?resizew=198)
A.圆台的母线长为10 |
B.圆台的侧面积为![]() |
C.由点A出发沿侧面到达点C的最短距离是![]() |
D.在圆台内放置一个可以任意转动的正方体,则正方体棱长的最大值是4 |
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解题方法
2 . 将一个边长为
的正六边形
(图
)沿
对折,形成如图
所示的五面体,其中,底面
是正方形.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/6/0f02daa5-242a-428e-9be1-dd001ef68e52.png?resizew=464)
(1)求五面体(图
)中
的余弦值:
(2)如图
,点
分别为棱
上的动点.
①求
周长的最大值,并说明理由;
②当
周长最大时,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3a079cfdcca9acdacecbf08f9f78cc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/6/0f02daa5-242a-428e-9be1-dd001ef68e52.png?resizew=464)
(1)求五面体(图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d3f19ab76b27b47aeaaf4a66f0e580b.png)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c0f067a2a348ceb24a408f82992eab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bb025beb66dc609261deac78327954c.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59f3f9f4edf520ce61c8e83a2be394d6.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59f3f9f4edf520ce61c8e83a2be394d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/546990b47ca3fdd5681de4749246d38e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1828e73ec5e00f95aa11ff74c703a5c1.png)
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名校
3 . 棱长为2的正四面体
中,
分别是
的中点,点
是棱
上的动点,则下列选项正确的有( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ce9b6bb1f3e46026af863b2b269ecf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b511eccad44ffbed4f9553e1cb1d1597.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.存在点![]() ![]() ![]() |
B.存在点![]() ![]() |
C.![]() ![]() |
D.当![]() ![]() ![]() |
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2022-07-04更新
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2卷引用:福建省宁德市2021-2022学年高一下学期期末质量检测数学试题
名校
4 . 如图所示,圆锥
的底面半径
,高
,
是底面圆周的一条直径,M为底面圆周上与B不重合的一点,则下列命题正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/8/85924338-7a12-4c2a-9b43-337179c31a34.png?resizew=235)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e5ef91fb27dd684a27ae7f1993cfba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6327437ce4b79548db02ed590058bbe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3cd6cbcac68a79897e63c423251ad4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/8/85924338-7a12-4c2a-9b43-337179c31a34.png?resizew=235)
A.圆锥![]() ![]() |
B.圆锥![]() ![]() |
C.![]() ![]() |
D.有一只蚂蚁沿圆锥的侧面从点A爬行到点B,则蚂蚁爬行的最短距离为![]() |
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2022-07-03更新
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7卷引用:湖南省岳阳市2021-2022学年高二下学期期末数学试题
湖南省岳阳市2021-2022学年高二下学期期末数学试题广东省广州市第五中学2022-2023学年高一下学期第一次段考数学试题(已下线)第21讲 简单几何体的表面积与体积7种常考题型(2)江苏省无锡市市北高级中学2022-2023学年高一下学期期中数学试题山东省枣庄市第三中学2022-2023学年高一下学期5月月考数学试题新疆乌鲁木齐市高级中学2024届高三下学期2月月考数学试题(已下线)模块四 高一下期中重组篇(江苏)
5 . 请在下面两题中选择一题作答:
题
设点
是抛物线
与双曲线
在第一象限的唯一公共点,点
,
分别是
的准线与
的两条渐近线的交点,则
的面积为__________ .
题
已知球的体积
和表面积
均是球半径
的函数,分别记为
,
若球
的半径
满足
,点
到球心
的距离为
,过点
作平面
,则平面
截球
所得截面圆的面积的最小值为__________ .
题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47a34029cc0f7665d32694f0837b2f7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19cf08f835978859030ed7aceabafc27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceea7e3117a7041ebe102193d087430b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/508f5b0a8b1ac58f88d886a850f3ae1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54e84508decfcce6d2fcbe6c8c1a92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d524e6addf9435f64de5c45423b29b73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2816117b19e6c825c5131e136481c789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5aeb128d36a0612d378b925c496df48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](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/1dde8112e8eb968fd042418dd632759e.png)
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6 . 如图,在三棱锥
中,
平面
米,
米,
与底面
所成角的正切值为2.已知蚂蚁从点
出发,沿着侧面
走到
上的一点,再沿着侧面
继续走到棱
上,则这只蚂蚁从点
出发到达棱
的最短路程为_______ 米,这只蚂蚁的最短路线与
的交点到底面
的距离为______ 米.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0fc7f8a5ae4f02b1f07ef1b62a503bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/c2f13671-b9be-4c13-985d-ee0de8684fe6.png?resizew=160)
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7 . 在下列对△ABC的描述中,能判定△ABC是直角三角形的是( )
A.sin2A=sin2B | B.![]() |
C.A(1,1),B(3,-2),C(4,3) | D.△ABC为正方体的某个截面 |
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解题方法
8 . 在三棱锥
中,顶点A在底面
的射影为O,则下面说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
A.若O为![]() ![]() |
B.若O为![]() |
C.若O为![]() ![]() ![]() |
D.若O为![]() |
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名校
9 . 如图,在平面四边形
中,
,
,M为
的中点,现将
沿
翻折,得到三棱锥
,记二面角
的大小为
,
,下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/2022/6/24/3008243596648448/3008850173722624/STEM/0a43ede85ddd4d238ff2fd01ef6233f5.png?resizew=235)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/520f8abda6a85e7ef6f281fc2df853fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35002c16afce95b8a6b000ca12673337.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e51b89f545616ef48f3706850107ad95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0005e1ef60f6ddc5f9a83e3de1ef3b2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab6d47edbcc2ae6efcfd7f28e401e3e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f63dc02238b087ff47e9aa5bf6759d.png)
![](https://img.xkw.com/dksih/QBM/2022/6/24/3008243596648448/3008850173722624/STEM/0a43ede85ddd4d238ff2fd01ef6233f5.png?resizew=235)
A.存在![]() ![]() |
B.存在![]() ![]() |
C.![]() ![]() ![]() |
D.记三棱锥![]() ![]() ![]() |
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2022-06-25更新
|
573次组卷
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3卷引用:浙江省嘉兴市2021-2022学年高二下学期期末数学试题
名校
解题方法
10 . 平行四边形ABCD中,
,
,如图甲所示,作
于点E,将
沿着DE翻折,使点A与点P重合,如图乙所示.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/22/ff6f32a8-1ad4-4851-b013-3200acd67296.png?resizew=371)
(1)设平面PEB与平面PDC的交线为l,判断l与CD的位置关系,并证明;
(2)当四棱锥
的体积最大时,求二面角
的正切值;
(3)在(2)的条件下,G、H分别为棱DE,CD上的点,求空间四边形PGHB周长的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f80f51c31583fea58fde645474d60b8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5595129319f9f5f069297ddb1455f97a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/22/ff6f32a8-1ad4-4851-b013-3200acd67296.png?resizew=371)
(1)设平面PEB与平面PDC的交线为l,判断l与CD的位置关系,并证明;
(2)当四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e98920101c174b991d7a8481707ab88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/715cc9ea5e7d80930284ffb117142770.png)
(3)在(2)的条件下,G、H分别为棱DE,CD上的点,求空间四边形PGHB周长的最小值.
您最近一年使用:0次
2022-06-20更新
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1448次组卷
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5卷引用:湖南省长沙市四校联考2021-2022学年高一下学期期末数学试题