如图,已知六棱锥PABCDEF的底面是正六边形,PA⊥平面ABC,PA=2AB,则下列结论正确的是________ .(填序号)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/27/8e9aa770-9189-4a58-acb3-4d740cb1642b.png?resizew=180)
①PB⊥AD;
②平面PAB⊥平面PBC;
③直线BC//平面PAE;
④直线PD与平面ABC所成的角为45°.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/27/8e9aa770-9189-4a58-acb3-4d740cb1642b.png?resizew=180)
①PB⊥AD;
②平面PAB⊥平面PBC;
③直线BC//平面PAE;
④直线PD与平面ABC所成的角为45°.
20-21高一下·全国·课后作业 查看更多[2]
(已下线)8.6.3 平面与平面垂直(练习)-2020-2021学年下学期高一数学同步精品课堂(新教材人教版必修第二册)吉林省延边汪清县汪清第四中学2020-2021学年高一下学期期末数学试题
更新时间:2021-04-18 06:37:16
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