名校
1 . 三棱柱
中,
,点
是
的外心,
平面
,
,二面角
为
,则下列选项中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fd8f940b796af67206b3f9dd410a407.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01e5981445b6f2a6c58974158d96a4de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f656e1d1f68954e5f06de8958f6a9310.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1654dfe63f11563eadbaee32dae7b1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
A.三棱柱的侧面积为![]() |
B.![]() ![]() ![]() |
C.点![]() ![]() ![]() |
D.若四棱锥![]() ![]() |
您最近一年使用:0次
2023-01-16更新
|
763次组卷
|
3卷引用:河北省石家庄市2023届高三上学期期末数学试题
名校
解题方法
2 . 如图,在三棱锥
中,
,
,
,
为
的中点,点
是棱
上一动点,则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/2022/5/3/2971556730806272/2973106767036416/STEM/6a23df76-c75c-4356-94a4-f8d00530a460.png?resizew=219)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb4957406b21df59fdf7fa184752287b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1082dd7e08556354aa7d4861d419e4c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b4c1ae9c57d51e27bbdb001122d3bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2022/5/3/2971556730806272/2973106767036416/STEM/6a23df76-c75c-4356-94a4-f8d00530a460.png?resizew=219)
A.三棱锥![]() ![]() |
B.若![]() ![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() ![]() |
D.![]() ![]() |
您最近一年使用:0次
2022-05-05更新
|
1009次组卷
|
4卷引用:湖南省岳阳市第一中学2022届高三下学期一模数学试题