解题方法
1 . 如图,在棱长为2的正方体
中,点E,F,G分别是棱BC,
,
的中点,点P为底面
上任意一点.若P与
重合,则三棱锥E-PFG的体积是____ ;若直线BP与平面EFG无公共点,则BP的最小值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/20/b675836d-e38d-4bc1-bf33-de54fa375965.png?resizew=172)
您最近一年使用:0次
2022-04-20更新
|
1010次组卷
|
3卷引用:北京市通州区2022届高三高考一模数学试题
解题方法
2 . 在直三棱柱
中,
、
、
、
、
分别是
、
、
、
、
的中点,给出下列四个判断:
![](https://img.xkw.com/dksih/QBM/2022/3/4/2929221947179008/2932484404887552/STEM/3747e67a-946b-4cd9-9d84-1daee92a9235.png?resizew=170)
①
平面
;
②
平面
;
③
平面
;
④
平面
,
错误的序号为___________ .
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://img.xkw.com/dksih/QBM/2022/3/4/2929221947179008/2932484404887552/STEM/3747e67a-946b-4cd9-9d84-1daee92a9235.png?resizew=170)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b2213b575a7cfaffcdf91885005c7d.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b766876252d16f2e331ef2893d45cf04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b2213b575a7cfaffcdf91885005c7d.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/752dc3cc77f0d0ec4a1d0981970410a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b2213b575a7cfaffcdf91885005c7d.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06bc0c87bc1dbd3963c9f9f9f7cae381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b2213b575a7cfaffcdf91885005c7d.png)
错误的序号为
您最近一年使用:0次
2022-03-09更新
|
995次组卷
|
5卷引用:江西省南昌市2022届高三第一次模拟测试数学(文)试题
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