如图,
为圆O的直径,点E、F在圆O上,
,矩形
的边
垂直于圆O所在的平面,且
,
.
(1)求证:
平面
;
(2)设
的中点为M,求证:
平面
;
(3)求三棱锥的体积
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c91baecb97fadd4f8ab49e6effcbc04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a951292add4574c1debd16800674e1e.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a22d6b860f06fe23618b0d3de6768fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/603c7e98deecdba0cf3773757a9b8304.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735056c174e8dd7906257a2a50a962a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280247d7df395bb9ea78c51e67b458d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c93a34cbd4c0dc198b74524c0e05a10.png)
(3)求三棱锥的体积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e70da814a1f069b0a2ab9595ad7430ce.png)
![](https://img.xkw.com/dksih/QBM/2012/2/9/1570727480557568/1570727486062592/STEM/a714eee1-3d26-43fa-ac0c-bc3de3514a92.png?resizew=182)
11-12高三·福建泉州·阶段练习 查看更多[1]
(已下线)2012届福建省泉州四校高三第二次联考考试文科数学
更新时间:2016-12-01 14:36:09
|
相似题推荐
解答题-证明题
|
适中
(0.65)
解题方法
【推荐1】如图所示,直角梯形ACDE与等腰直角△ABC所在平面互相垂直,F为BC的中点,
,AE
CD,DC=AC=2AE=2.
(Ⅰ)求证:平面BCD
平面ABC
(Ⅱ)求证:AF
平面BDE;
(Ⅲ)求四面体B-CDE的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc306485b010bdec4281bc68909c08b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
(Ⅰ)求证:平面BCD
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
(Ⅱ)求证:AF
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
(Ⅲ)求四面体B-CDE的体积.
![](https://img.xkw.com/dksih/QBM/2012/2/22/1570765186605056/1570765192044544/STEM/2b4cba8a5f0748eda64285d7727cbec9.png?resizew=184)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
解题方法
【推荐2】如图所示,在四棱锥
中,底面
为梯形,
,
,
,平面
平面
,
,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/2021/3/10/2675113520578560/2683952366346240/STEM/9b969ee1f32c4d0aab8a9e6129909de2.png?resizew=189)
(1)证明:
;
(2)求四棱锥
的体积.
![](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/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5acb763021bf166ca719d07223591d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ee81b6066188abee9d167b6c7f3f71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a3fd5284e160896f07ce367645fd04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e808897e0e659740988fb3311f610dc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4134f883ea9b5a1d6d1d03489379ed85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/2021/3/10/2675113520578560/2683952366346240/STEM/9b969ee1f32c4d0aab8a9e6129909de2.png?resizew=189)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4486d52b6e410fd7b60428121d96cef.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】如图,直三棱柱
中,
,
分别是
,
的中点,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7e070006ae06338c27ffc4e30044bc7.png)
![](https://img.xkw.com/dksih/QBM/2016/3/14/1572533810749440/1572533816696832/STEM/5f8eacf99c8c44b5b33069c059a1ad1a.png?resizew=166)
(Ⅰ)证明:
平面
;
(Ⅱ)求
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7e070006ae06338c27ffc4e30044bc7.png)
![](https://img.xkw.com/dksih/QBM/2016/3/14/1572533810749440/1572533816696832/STEM/5f8eacf99c8c44b5b33069c059a1ad1a.png?resizew=166)
(Ⅰ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f5830646a912c3a916beac4f88c116b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74bca84ad86c648d3bb20c8909c8da3f.png)
(Ⅱ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce1b066f8869d0ff4513f7a99745125.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74bca84ad86c648d3bb20c8909c8da3f.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
解题方法
【推荐2】如图所示的五面体
中,平面![](https://img.xkw.com/dksih/QBM/2019/5/9/2199904660062208/2200528084885504/STEM/17be5805383d4be7923939574aec09d2.png?resizew=39)
平面
,
,
,
∥
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/2b54cbdd-ab1d-4300-b671-9e1d000f3182.png?resizew=209)
(Ⅰ)求四棱锥
的体积;
(Ⅱ)求证:
∥平面
;
(Ⅲ)设点
为线段
上的动点,求证:
与
不垂直.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://img.xkw.com/dksih/QBM/2019/5/9/2199904660062208/2200528084885504/STEM/17be5805383d4be7923939574aec09d2.png?resizew=39)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d5427b7b994b860628df3d6b7a07de8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38d00572a90232e08932317af2a53767.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://img.xkw.com/dksih/QBM/2019/5/9/2199904660062208/2200528084885504/STEM/4f92936320b040f4abde21ea625da850.png?resizew=87)
![](https://img.xkw.com/dksih/QBM/2019/5/9/2199904660062208/2200528084885504/STEM/d9608e061c314a3f9390e88e28d14601.png?resizew=83)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/2b54cbdd-ab1d-4300-b671-9e1d000f3182.png?resizew=209)
(Ⅰ)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
(Ⅱ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(Ⅲ)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2019/5/9/2199904660062208/2200528084885504/STEM/52c8bafa754944f5b2b4a191fc3be689.png?resizew=31)
![](https://img.xkw.com/dksih/QBM/2019/5/9/2199904660062208/2200528084885504/STEM/3298f1d2a4984601ad15bea0baf6a984.png?resizew=29)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐3】已知四棱锥
,底面
为正方形,且
底面
,过
的平面与侧面
的交线为
,且满足
(
表示
的面积).
(1)证明:
平面
;
(2)当
时,二面角
的余弦值为
,求
的值.
![](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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28ee2d2c33f73571cb9e3b96276f1acc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49a131604d5c482ec8edb88e00687277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f1c4ed7451103f0cbf14bb9ae219b43.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/18/24779f04-4ddc-4719-bb0f-da3ea8aab7bd.png?resizew=155)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa69a2247ad4d5231aa361349b12f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc4ba0f5fb4a61b67ce8f9984e6f7f49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/206695fadf6ab817ae8650f47fbf65d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f687ee88f27e8fe32de9d2435b3241f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐1】在三棱柱
中,侧面
平面
,
,侧面
为菱形,且
为
中点.
平面
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df00cdf77ed39ca5a0b305861a693142.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a65220a73f2926dd73e083627524af97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/269c684310d0f7b5b9bf0a291e7ee748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18a0bebcc9e80bbe35943d42f0e00d04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4890e58791814622b87c4d60ea971f54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f96c673a2381f118ea2d3efc0bca1f3.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd9ed960d92cd08e368ed56651fe6632.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】
如图,三角形ABC中,AC=BC=
,四边形ABED是正方形,平面ABED⊥底面ABC,若G、F分别是EC、BD的中点.
(1)求证:GF//底面ABC;
(2)求证:AC⊥平面EBC;
(3)若正方形ABED的边长为1,求几何体ADEBC的体积.
如图,三角形ABC中,AC=BC=
![](https://img.xkw.com/dksih/QBM/2011/12/10/1570568744722432/1570568750071808/STEM/7e09b1f4474d4f2eb03a24c58de6dce3.png)
(1)求证:GF//底面ABC;
(2)求证:AC⊥平面EBC;
(3)若正方形ABED的边长为1,求几何体ADEBC的体积.
![](https://img.xkw.com/dksih/QBM/2011/12/10/1570568744722432/1570568750071808/STEM/8863295ae71243e1bc692f5cf38705fb.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
解题方法
【推荐3】如图是一个圆柱沿圆柱的轴截去一半后所得的几何体,点
是底面的半圆弧
上异于
的点,连接
.
![](https://img.xkw.com/dksih/QBM/2021/7/7/2758955261968384/2778968047648768/STEM/cfcbc4f9-38e7-4602-8da4-49fc37da71dd.png?resizew=248)
(1)证明:
平面
﹔
(2)若点
是线段
中点,求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/701e3b08c2407c99eb50a7075bcebc3a.png)
![](https://img.xkw.com/dksih/QBM/2021/7/7/2758955261968384/2778968047648768/STEM/cfcbc4f9-38e7-4602-8da4-49fc37da71dd.png?resizew=248)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb92a5e7dc942c44d0f6d7f3906ff804.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29f491a794b9ac1a85a18c87ecee616c.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a90c5466cb1f9810d2739a7634a4352.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
您最近一年使用:0次