已知
,
是两个平面,
,
是两条直线,则下列四个结论中,正确的有__ (填写所有正确结论的编号)
①若
,
,则
;
②若
,
,则
;
③若
,
,则
;
④若
.
,
,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4042f9c51f83e3367d496e851735d7f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79018590293277ff2d76452a50ad2dbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a93a52c2b943e4c70ace99ed802d2b5.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe920cd78db25f5b4df37d066e57800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79018590293277ff2d76452a50ad2dbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b6e422b2e6f6dada4d8c369559a077.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35f747152f006301e03b643afb80195c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/539a38ada26356d73024fb8533449c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/808c6d37467a5c995d71e49408503927.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b6e422b2e6f6dada4d8c369559a077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe920cd78db25f5b4df37d066e57800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f4ded3c4bc7a2212f2a0eb5f9753de5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
20-21高一·全国·课后作业 查看更多[2]
(已下线)2.1.4 平面与平面之间位置关系-2020-2021学年高一数学课时同步练(人教A版必修2)(已下线)专题05 基本图形的位置关系-2020-2021学年高一数学下学期期末专项复习(苏教版2019必修第二册)
更新时间:2021-04-19 22:53:11
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相似题推荐
填空题-单空题
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【推荐1】给出下列四个命题:
①垂直于同一直线的两条直线互相平行;
②垂直于同一平面的两个平面互相平行;
③若直线l1,l2与同一平面所成的角相等,则l1,l2互相平行;
④若直线l1,l2是异面直线,则与l1,l2都相交的两条直线是异面直线.
其中假命题有________ 个.
①垂直于同一直线的两条直线互相平行;
②垂直于同一平面的两个平面互相平行;
③若直线l1,l2与同一平面所成的角相等,则l1,l2互相平行;
④若直线l1,l2是异面直线,则与l1,l2都相交的两条直线是异面直线.
其中假命题有
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【推荐2】设
为不重合的两条直线,
为不重合的两个平面,给出下列命题:
①若
且
,则
;②若
且
,则
;
③若
,则一定存在平面
,使得
;
④若
,则一定存在直线
,使得
.
上面命题中,所有真命题的序号是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfa404d3ff313b0a28a76a48d7d87234.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae854eaf0f2d3b326e91de0914d059e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d61d302a8bdfffcc0a0ede8bcf59491d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d553efed052e7e0777728ef622a5c39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/675f1e09eb033dab8ef96d1f1c349150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73f345365fe0a1986b80299f7a99a306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de666db0febae223cc4d1dc189d71ca6.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe7cc8ae14de3ebb66edc7fa02b2477.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291d998fe381aa17ae8d6c6d5d5b557e.png)
上面命题中,所有真命题的序号是
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名校
【推荐1】a、b、c为三条不重合的直线,α、β、γ为三个不重合的平面,现给出六个命题.
①
⇒a∥b; ②
⇒a∥b; ③
⇒α∥β;
④
⇒α∥β; ⑤
⇒a∥α; ⑥
⇒a∥α,
其中正确的命题是________ .(填序号)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f6fda24e77bd467e0e9fa1bc743b507.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42594bff40cfcf4eb6416ecb5486372b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ab1c1a4444db7dc5ac06e29b816fa79.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1c165d7080d881e55513153c73d7980.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26af3369ca136e2bc3781271a3a9767b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00b93bcf393bfe52ac2c6ed03c60cee4.png)
其中正确的命题是
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解题方法
【推荐2】设
是两条不同的直线,
是两个不同的平面,有下列四个说法:
①若
,
,
,则
;
②若
,
,则
;
③若
,
,则
或
;
④若
,
,
,则
.
其中正确的个数为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/057cdb4057bca398a838e868efd360f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/675f1e09eb033dab8ef96d1f1c349150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6784912a159b0be1bf836f985b0c2794.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d61d302a8bdfffcc0a0ede8bcf59491d.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae854eaf0f2d3b326e91de0914d059e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73f345365fe0a1986b80299f7a99a306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73f345365fe0a1986b80299f7a99a306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae854eaf0f2d3b326e91de0914d059e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72d2a947e3fdc214d40a7d3f54679a73.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/057cdb4057bca398a838e868efd360f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/675f1e09eb033dab8ef96d1f1c349150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f3aca2f1993d5e94255454c5f82a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
其中正确的个数为
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