1 . 如图
是⊙
的直径,点
是弧
上一点,
垂直⊙
所在平面,
,
分别为
,
的中点.
![](https://img.xkw.com/dksih/QBM/2016/2/26/1572503588536320/1572503594729472/STEM/a1c3719ab1194c8ea93d1f41cdf5afe4.png)
(1)求证:
平面
;
(2)若
,⊙
的半径为
,求点
到平面
的距离.
![](https://img.xkw.com/dksih/QBM/2016/2/26/1572503588536320/1572503594729472/STEM/64178eb09621428cb9e5ac00059c565d.png)
![](https://img.xkw.com/dksih/QBM/2016/2/26/1572503588536320/1572503594729472/STEM/bee6d620cc874c83b331dc211d1df500.png)
![](https://img.xkw.com/dksih/QBM/2016/2/26/1572503588536320/1572503594729472/STEM/cefbdea42fe44584819c034cb6beeae0.png)
![](https://img.xkw.com/dksih/QBM/2016/2/26/1572503588536320/1572503594729472/STEM/64178eb09621428cb9e5ac00059c565d.png)
![](https://img.xkw.com/dksih/QBM/2016/2/26/1572503588536320/1572503594729472/STEM/ff5fb47506ed4f0faebc40ccdf30750c.png)
![](https://img.xkw.com/dksih/QBM/2016/2/26/1572503588536320/1572503594729472/STEM/bee6d620cc874c83b331dc211d1df500.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/2016/2/26/1572503588536320/1572503594729472/STEM/b07b63dc6c5b4f59919b8b98747450b3.png)
![](https://img.xkw.com/dksih/QBM/2016/2/26/1572503588536320/1572503594729472/STEM/ff5fb47506ed4f0faebc40ccdf30750c.png)
![](https://img.xkw.com/dksih/QBM/2016/2/26/1572503588536320/1572503594729472/STEM/a1c3719ab1194c8ea93d1f41cdf5afe4.png)
(1)求证:
![](https://img.xkw.com/dksih/QBM/2016/2/26/1572503588536320/1572503594729472/STEM/4e9efb1cd28e42b9842cd9756f7c4353.png)
![](https://img.xkw.com/dksih/QBM/2016/2/26/1572503588536320/1572503594729472/STEM/d2c53d1fe65b41dda72e3fd74644a1bf.png)
(2)若
![](https://img.xkw.com/dksih/QBM/2016/2/26/1572503588536320/1572503594729472/STEM/c4f164531c5e46ee8e4f2918db5deb20.png)
![](https://img.xkw.com/dksih/QBM/2016/2/26/1572503588536320/1572503594729472/STEM/bee6d620cc874c83b331dc211d1df500.png)
![](https://img.xkw.com/dksih/QBM/2016/2/26/1572503588536320/1572503594729472/STEM/d7e6b4a7fa924d438eba66e942f48721.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/2016/2/26/1572503588536320/1572503594729472/STEM/cc0a45f7a1d24b529af31116b51a4e69.png)
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2 . 不同直线m,n和不同平面α,β,给出下列命题:①
,②
,③
,④
其中假命题有:
![](https://img.xkw.com/dksih/QBM/2016/4/14/1572593257357312/1572593262903296/STEM/a9d92b0e626d4a768322d2c2e81f8a72.png)
![](https://img.xkw.com/dksih/QBM/2016/4/14/1572593257357312/1572593262903296/STEM/9faaa6bf915d489a9b9b5fa2ac5df01f.png)
![](https://img.xkw.com/dksih/QBM/2016/4/14/1572593257357312/1572593262903296/STEM/4425f4d10f474ee09c12ff3675a3f04b.png)
![](https://img.xkw.com/dksih/QBM/2016/4/14/1572593257357312/1572593262903296/STEM/d13267e18e3b46fb8b659c9167e787f7.png)
A.0个 | B.1个 | C.2个 | D.3个 |
您最近一年使用:0次
2016-12-04更新
|
374次组卷
|
2卷引用:2015-2016学年湖南省衡阳八中高一下学期第一次月考数学试卷
3 . 在平行六面体
中,以顶点
为端点的三条棱长都为
,且两两夹角为
.
![](https://img.xkw.com/dksih/QBM/2016/11/28/1573184855162880/1573184861011968/STEM/297da2a2987d430b91cbe4f4bbf75954.png)
(1)求
的长;
(2)证明: 直线
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8456cee87c4e22351affc28f3a73a0f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b11d0840c5718c42ce3fe43fa00a4755.png)
![](https://img.xkw.com/dksih/QBM/2016/11/28/1573184855162880/1573184861011968/STEM/297da2a2987d430b91cbe4f4bbf75954.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cabe764f05300ac83c7d16b685d27af4.png)
(2)证明: 直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cceb400de7883da038580a119b15063e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73845d4d663b3de0b281611fe2c762fe.png)
您最近一年使用:0次
4 . 如图,在四棱锥
中,
是边长为
的正三角形,
底面
.
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572932147666944/1572932154081280/STEM/a0bec69d1b4b476e8b25367c542cb3cc.png)
(1)求证:
;
(2)已知
是
上一点, 且
平面
.若
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6153163fecdf3f410411048428ccaef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da95ecece2225aeaa4fd2ea84dc61753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07d090c89285fb59d4ae26c899620428.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df54b643e81970efd4739e733c4aa16d.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572932147666944/1572932154081280/STEM/a0bec69d1b4b476e8b25367c542cb3cc.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3aacb89c9441afb299130f0ac59a761.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d61c8d1a129f3156d3948300958ad7b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2899e607479d8d1c47d954ae9ebb7144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
5 . 设
均为直线’
均为平面,则下列命题判断错误的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad4860f72ea58fc5ddb1ca8a6bebd4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f1c8146d084248c9c65dd8a11801905.png)
A.若![]() ![]() ![]() |
B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() |
您最近一年使用:0次
6 . 如图,四棱锥
中,平面
底面
.
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573024533372928/1573024539729920/STEM/f9f740d77b214c7bad9e2d042076a5b2.png)
(1)证明:
;
(2)若
与
所成角的余弦值为
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6153163fecdf3f410411048428ccaef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba9008f244e609ad267e10b8861c8254.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67739bc45042e40299f35738a123cd56.png)
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573024533372928/1573024539729920/STEM/f9f740d77b214c7bad9e2d042076a5b2.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a72f112046d8a63ad1f4dc50a799869.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90a724807b50a99a9b7b83720544e61d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e468f168f3657d84d44be5eb89a62d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c17e554cb3bf737dbdbc66b7410d5eff.png)
您最近一年使用:0次
2016-12-04更新
|
257次组卷
|
2卷引用:2016届湖南宁远县一中高三下学期模拟考试数学(理)试卷
7 . 在四棱锥
中,
平面
,底面
是正方形,且
分别是棱
的中点.
![](https://img.xkw.com/dksih/QBM/2016/9/1/1572996557275136/1572996563599360/STEM/e80abd74b0144f598a00047c0378a07c.png)
(1)求证:
平面
;
(2)求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6153163fecdf3f410411048428ccaef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/551e4cd76a93de89ea2750160fe74923.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f70c24ad12de37922beeccd554779c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2682f3f3f0f72c893b99073bcac83ff2.png)
![](https://img.xkw.com/dksih/QBM/2016/9/1/1572996557275136/1572996563599360/STEM/e80abd74b0144f598a00047c0378a07c.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99063370e8d256bdb55d37bd8c69513e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)求证:
![](https://img.xkw.com/dksih/QBM/2016/9/1/1572996557275136/1572996563599360/STEM/8f8ed32d1be84df7acaf44ae4c2f5741.png)
![](https://img.xkw.com/dksih/QBM/2016/9/1/1572996557275136/1572996563599360/STEM/4d3d3312b07244c6a6069eb86f63410e.png)
您最近一年使用:0次
8 . 如图,三棱柱
中,侧面
为菱形,
.
![](https://img.xkw.com/dksih/QBM/2017/4/5/1659035943198720/1659377118322688/STEM/178cce2d180a4152a1be6a7509bdc8a4.png?resizew=172)
(1)证明:
;
(2)若
,平面
平面
,直线
与平面
所成角为
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ee347187fbbfe9e8a6faf286795d79.png)
![](https://img.xkw.com/dksih/QBM/2017/4/5/1659035943198720/1659377118322688/STEM/178cce2d180a4152a1be6a7509bdc8a4.png?resizew=172)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7870cee007535b979d35bc7feab75616.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25fa3a37b85f1b416a1c4343e16aa21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e3a59d7bf91a7540e35ce0011ad9b97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
9 . 已知直线
与直线
互相垂直,
平行于平面
,则直线
与平面
的位置关系是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d1a34ae2b8c77f8d7e355c6d1d667e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d1a34ae2b8c77f8d7e355c6d1d667e.png)
A.![]() | B.![]() | C.![]() ![]() | D.以上都有可能 |
您最近一年使用:0次
10 . 如图,在三棱锥
中,
,
,点
为
中点,
是
上一点,
底面
,
面
.
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959772160/STEM/8b409250e8284a5b99560171eebe8698.png)
(1)求证:
为
中点;
(2)当
取何值时,
在平面
内的射影恰好是
的中点.
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959772160/STEM/c29870433a19470293a67a7bab07feb0.png)
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959772160/STEM/eb7e37a162654bb681e7ac2c40659068.png)
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959772160/STEM/8497f833a51d4476b9511611643c4a03.png)
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959772160/STEM/703a66f358b640bfa6af53f70e8d11e5.png)
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959772160/STEM/026a735903f343abb14b76be22b259cd.png)
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959772160/STEM/44e39aa6328944b49bde881f0cb68af3.png)
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959772160/STEM/312a1c381f784ef3a3d9859171a4156b.png)
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959772160/STEM/54008c53b0ab4cba9be1bb06464c7e81.png)
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959772160/STEM/c71c4a530c7344e0b0fdb6af356e3fcf.png)
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959772160/STEM/6d29b9cee3754af69ec7bce10f1ae57c.png)
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959772160/STEM/52ae8e3d5c7845fdb76152fd3d3dc8c9.png)
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959772160/STEM/8b409250e8284a5b99560171eebe8698.png)
(1)求证:
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959772160/STEM/44e39aa6328944b49bde881f0cb68af3.png)
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959772160/STEM/312a1c381f784ef3a3d9859171a4156b.png)
(2)当
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959772160/STEM/854b331455bd481d89bc37ad7d6f1a84.png)
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959772160/STEM/703a66f358b640bfa6af53f70e8d11e5.png)
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959772160/STEM/6a86a48c8bed4f2894580529b3d1795d.png)
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959772160/STEM/33b39b962eea48c7b2c79ba0cddc64c8.png)
您最近一年使用:0次