名校
解题方法
1 . 如图,在四棱锥
中,
是边长为2的等边三角形,梯形
满足
,
,
,M为AP的中点.
![](https://img.xkw.com/dksih/QBM/2021/12/23/2878587058946048/2924764614393856/STEM/c324e68b-eab1-4f19-b18d-e8661c31a056.png?resizew=174)
(1)求证:
平面
;
(2)若
,求点C到平面PAD的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e921f46d90e43f4517c55832b6280f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://img.xkw.com/dksih/QBM/2021/12/23/2878587058946048/2924764614393856/STEM/c324e68b-eab1-4f19-b18d-e8661c31a056.png?resizew=174)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcfacd208d769d01f1d4ef20313cd869.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41cd5c4f8b106d01e0e431078e1a468b.png)
您最近一年使用:0次
2022-02-26更新
|
520次组卷
|
3卷引用:广西南宁市第三中学2023届高三下学期数学强化训练试题(一)
名校
2 . “天圆地方”观反映了中国古代科学对宇宙的认识,后来发展成为中国传统文化的重要思想.中国古人将琮、璧、圭、璋、璜、琥六种玉制礼器谓之“六瑞”,玉琮内圆外方,表示天和地,中间的穿孔表示天地之间的沟通,可以说是中国古代世界观很好的象征物.下面是一玉琮图及其三视图,设规格如图所示(单位:cm),则三视图中
,
两点在实物中对应的两点在实物玉璧上的最小距离约为( )(
,
)
![](https://img.xkw.com/dksih/QBM/2021/4/5/2693351267409920/2808192490536960/STEM/6eeab69a-bd71-480c-8a63-16809df72228.png?resizew=523)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f13a78a5feb056770750c6a0ebebdd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a929d0d84e3654f03694adc8d1a326e.png)
![](https://img.xkw.com/dksih/QBM/2021/4/5/2693351267409920/2808192490536960/STEM/6eeab69a-bd71-480c-8a63-16809df72228.png?resizew=523)
A.8.4 | B.9.8 | C.10.4 | D.11.2 |
您最近一年使用:0次
2021-09-14更新
|
366次组卷
|
3卷引用:广西南宁市第三中学2023届高三下学期数学强化训练试题(一)