如图,在直三棱柱
中,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/f4eb236e-0671-4c69-ae0a-69a666daf138.png?resizew=394)
(1)下图给出了该直三棱柱三视图中的主视图,请据此画出它的左视图和俯视图.
(2)若
是
的中点,求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4009c00fc8d746b9e92b5888963fb311.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/f4eb236e-0671-4c69-ae0a-69a666daf138.png?resizew=394)
(1)下图给出了该直三棱柱三视图中的主视图,请据此画出它的左视图和俯视图.
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf2bff0e5641347f76e7308339999b47.png)
9-10高二下·广东河源·期末 查看更多[4]
(已下线)2010年广东省龙川一中高二下学期期末考试文科数学卷上海市复旦大学附属中学2019-2020学年高三上学期开学摸底数学试题上海市七宝中学2015-2016学年高二下学期期末数学试题2016届上海市高考压轴数学试题
更新时间:2019-12-12 19:13:37
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相似题推荐
解答题-作图题
|
较易
(0.85)
名校
解题方法
【推荐1】如图,在三棱锥
中,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/68e3da10-b124-4ae1-96ab-6ef6e16e68d1.png?resizew=243)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/f5b1547a-91e7-45b6-9374-0e6c724a5534.png?resizew=276)
(1)根据图中所给主视方向,在下列方格纸(方格的单位长度为1)上已画出该三棱锥的主视图,请画出该三棱锥的左视图和俯视图;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5ae8a050d7159d4296c2409e5bc0bf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f7898f562dffdf08263bfb0873e0691.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/364d6c88726d8c3bb8ed297057332bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/68e3da10-b124-4ae1-96ab-6ef6e16e68d1.png?resizew=243)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/f5b1547a-91e7-45b6-9374-0e6c724a5534.png?resizew=276)
(1)根据图中所给主视方向,在下列方格纸(方格的单位长度为1)上已画出该三棱锥的主视图,请画出该三棱锥的左视图和俯视图;
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a15a004f7d47ed595f063e60075223a.png)
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解答题-作图题
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较易
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【推荐2】如图,设所给的方向为物体的正前方,试画出它的三视图(单位:cm).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/44effeea-fbdd-4226-ab16-b212c4f71afe.png?resizew=129)
您最近一年使用:0次
【推荐1】如图,四棱锥
的底面是正方形,
平面
,点
在棱
上.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/16/f581145e-bd73-4bc6-8484-9f0022054500.png?resizew=182)
(1)求证:平面
平面
;
(2)当
,且
时,确定点
的位置,即求出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/16/f581145e-bd73-4bc6-8484-9f0022054500.png?resizew=182)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4a46fbde58e12b1edc038ae9e921722.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ca5b5fd1031438de2d2dd59be8c348.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66ccc80f575070a5b5ac5d1dc3b2ebd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891e4ab986a113dff3ab8505e5f44bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4a0d511365abd9df144a412ccd4615.png)
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解答题-问答题
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【推荐2】如图,四棱锥
的底面
为菱形,
平面
,E、F且分别为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/18/c563e2c3-b53a-435a-9992-dc3c7cb262aa.png?resizew=178)
(1)求异面直线
与
所成角的大小;
(2)求四棱锥
的侧面积;
(3)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ab81cea88593ed61d48081f51111c8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72f0b207cfae38d6988a04f7f51ee503.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/18/c563e2c3-b53a-435a-9992-dc3c7cb262aa.png?resizew=178)
(1)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
(3)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16fd1bc6147d69777b26a35d48522f7e.png)
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