如图,在四棱锥中,底面
是平行四边形,且
,
,平面
平面
,
.
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)在棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/532c7d9eb4015a630d0f2f5038991932.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d83fb9ac8a18e78a4c56da79514b5ccb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2942447b6af4f2749668439d5ee03a7.png)
23-24高二上·山西吕梁·期中 查看更多[3]
山西省吕梁市2023-2024学年高二上学期11月期中数学试题重庆市九龙坡区四川外国语大学附属外国语学校2024届高三上学期期中数学试题(已下线)考点13 立体几何中的探究问题 2024届高考数学考点总动员【讲】
更新时间:2023-11-19 23:01:06
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相似题推荐
【推荐1】如图,在正三棱柱
中,
分别为
的中点.
(1)证明:平面
平面
.
(2)若侧面
的中心为
为侧面
内的一个动点,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
平面
,且
的轨迹长度为
,求三棱柱
的表面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1394b37d41901748bc3c5643b58c812c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dce21311bf50215101b605356358b9a8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/17/bd5e334f-3f17-4af6-9764-92df8259b817.png?resizew=139)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b3b56a19d400eb5ce0b5a8744c27d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
(2)若侧面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ef19f98e86ae7504671413780b3b1a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af2fdf1944afebb51cb6a5e6c74aadd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
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|
适中
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解题方法
【推荐2】如图,在四棱锥
中,
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d0c2a55d368a0447e0ca8c2a296c28.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/81d11dc3-6c1c-490f-b2e7-e1171e04f162.png?resizew=185)
(1)证明:平面
平面
;
(2)若
,
,求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d0c2a55d368a0447e0ca8c2a296c28.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/81d11dc3-6c1c-490f-b2e7-e1171e04f162.png?resizew=185)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1efd893b3b1058847af9464be9b6d44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c5ace226a547e68702df548b08cb5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9f1e2b86f4eca37c72011d3dffb0c9.png)
您最近一年使用:0次
解答题-证明题
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适中
(0.65)
【推荐1】如图,在四棱锥
中,底面
为直角梯形,
,
,侧面
平面
,求证:
.
![](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/71b2a45379ed3eb717936ba27365174e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a204736186742e998dd00acff244a3e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/712f7375b4ede5f75c0d81870c0f86af.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/9/4afd9575-98de-4fc2-aa32-9b10e42f041d.png?resizew=164)
您最近一年使用:0次
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(0.65)
【推荐2】如图,在四棱锥
中,底面
为直角梯形,
,
,平面
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/1/150a2986-e477-49f2-b4fb-ab7990ad98ae.png?resizew=138)
(1)求证:
;
(2)求平面
和平面
的夹角的余弦值.
![](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/b0465d52848d924b0576172c9b22a831.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b2b1eb794052054e2e164cd12c1b90b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342d452a7b850cd3a15b23619ad39bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d47d1b9f0319cf1c7355eb87b9ee6b03.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/1/150a2986-e477-49f2-b4fb-ab7990ad98ae.png?resizew=138)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b07e317ffe7859e81b42ef4970e344a.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
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(0.65)
【推荐3】如图,在多面体
中,已知
,
,
,
,
为等边三角形.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/26/f4f03364-45c1-476e-af7d-0dd5a5d50846.png?resizew=138)
(1)求证:
;
(2)求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd81adb13f5a7550b0f94f770900a613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8915e8e775538d41debf1933102c6b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/553a93e0b6156befa00b50bdfaef95d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07cbcd84075332692acd5f41f87602b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/26/f4f03364-45c1-476e-af7d-0dd5a5d50846.png?resizew=138)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589ddae20626f9aaac616d2a3b5d95bd.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
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解答题-证明题
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解题方法
【推荐1】如图,圆台上底面圆
半径为1,下底面圆
半径为
为圆台下底面的一条直径,圆
上点
满足
是圆台上底面的一条半径,点
在平面
的同侧,且
.
![](https://img.xkw.com/dksih/QBM/2022/4/26/2966573292437504/2968469579579392/STEM/259d8c83-f08f-4c4b-9aef-f05e35c1d544.png?resizew=163)
(1)证明:平面
平面
;
(2)若圆台的高为2,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/838a424964c2e96bb8e8dfc27a062b1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d46827c30d924e9a7fc8d627515e4c5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfaa712e64750e3e2843bae68ebad6d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3da630440d6d416f19ee22c8431c882.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b658c6aaa010f64b703a97b3fc7db187.png)
![](https://img.xkw.com/dksih/QBM/2022/4/26/2966573292437504/2968469579579392/STEM/259d8c83-f08f-4c4b-9aef-f05e35c1d544.png?resizew=163)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)若圆台的高为2,求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cee51552e3c12bc27cf8ab1777bf191.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
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【推荐2】如图,在底面是正方形的四棱锥
面ABCD,BD交AC于点E,F是PC中点,G为AC上一点.
(1)求证:
;
(2)确定点G在线段AC上的位置,使FG//平面PBD,并说明理由;
(3)当二面角
的大小为
时,求PC与底面ABCD所成角的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44a1c291f44afb96922096b93cb9d24e.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c799d3d37ed64c9c74c0d3d932cd3f3f.png)
(2)确定点G在线段AC上的位置,使FG//平面PBD,并说明理由;
(3)当二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1069d514c3c32aeabd274475ee209ed6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c0927afc571a7c966c98192040979e.png)
![](https://img.xkw.com/dksih/QBM/2018/3/9/1898492046327808/1906173459415040/STEM/5e7ee2759f67420e841fb496f11c09ef.png?resizew=215)
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