33-视图与投影
一、单选题
A.![]() | B.4 | C.2 | D.![]() |
【知识点】 求特殊角的三角函数值解读 已知三视图求边长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/497911bc462170183e81d95bd509b70b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5265d99095b635f62c7915298ec0e963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ce2830528c2ea6b5d4df0c77644e33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb0628cecbfc98d390e5447d52414e8.png)
A.4 | B.![]() | C.![]() | D.5 |
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/18/f442d94c-5487-4c4c-bce8-da39768eaf09.png?resizew=199)
A.8 | B.9 | C.10 | D.![]() |
【知识点】 已知三视图求最多或最少的小立方块的个数解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/23/1bccb666-95dc-4c45-a7a5-2314b439210a.png?resizew=138)
A.![]() | B.![]() | C.![]() | D.![]() |
(1)若将图1中正方体的表面沿某些棱剪开,展成一个平面图形,需要剪开7条棱;
(2)用一个平面从不同方向去截图1中的正方体,得到的截面可能是三角形、四边形、五边形或六边形;
(3)用一个平面去截图1中的正方体得到图2,截面三角形ABC中∠ABC=45°;
(4)如图3,要搭成该几何体的正方体的个数最少是a,最多是b,则a+b=19
其中正确结论的个数有( )
![](https://img.xkw.com/dksih/QBM/2022/1/4/2886961133338624/2887771606859776/STEM/81aec87c7fcf41ea8b014918288f3479.png?resizew=503)
A.1个 | B.2个 | C.3个 | D.4个 |
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/8c5b58fb-8560-4121-b15f-bdb4d3395f76.png?resizew=239)
A.7.2 | B.6.6 | C.5.7 | D.7.5 |
【知识点】 相似三角形的判定与性质综合 中心投影解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/095ab4a92bf822e175d370e6d0c8a730.png)
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/31/84e8fa8a-c854-4681-b1f2-1c2b5d5e3d45.png?resizew=137)
A.![]() | B.![]() | C.![]() | D.![]() |
【知识点】 正方体几种展开图的识别解读 求最短路径(勾股定理的应用)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20b2c57e4881e18ce847d8f566e484ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae8221601c7bd5c51fd520615581fa1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/24/d9df1afb-de90-4611-a6ff-ad425a355da8.png?resizew=241)
A.![]() | B.![]() | C.![]() | D.![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbbecbd7e92dcbe1766462fcf40066de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c748e40ba21ac5063d3bccaa57ef278.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b29d9d4c81c9a02c4060a8685312adb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08dab44a5b964fbf8d97eb8b2d34a292.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/2/cc755d2c-4341-4fa2-aaf0-8035d76ebd5f.png?resizew=340)
A.![]() | B.![]() | C.![]() | D.无法判断 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/15/af2ca954-d2a9-4571-bbaf-a1e1c9c839da.png?resizew=235)
A.5![]() | B.4![]() | C.3+4![]() | D.4+4![]() |
【知识点】 相似三角形的判定与性质综合 解直角三角形的相关计算解读 平行投影解读
二、填空题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83042953e7f15e984b2da2ee9ca678d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0f0a9fa367ad4fd36561837392dc765.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83042953e7f15e984b2da2ee9ca678d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffd44bb84828d9a9ec7a89521123a1c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0f0a9fa367ad4fd36561837392dc765.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff4a63d14654c66cc71bf26293d698ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5c8def4b392692a162cda47aea62bb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd319b129adce519612311ec4a3d82d5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/990f1214-6975-441c-a823-010261342cb4.png?resizew=222)
①点光源所在的位置是
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
②若点光源发出的过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd07ca7086005ae33817fa58d7c5b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5c8def4b392692a162cda47aea62bb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2636a77f572c6f512e2371ecb63939d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f774534a40cb3cb8f67176d6cb05002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0f0a9fa367ad4fd36561837392dc765.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5a5e484dfef494d27bc35ae7b8cf75d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/949d6e9cdd78992bbe69fc32e33e48a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/22/02256769-32bf-4a65-9d97-f4921314f9a6.png?resizew=350)
【知识点】 用勾股定理解三角形解读 相似三角形的判定与性质综合 平行投影解读
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/1/877f656b-b1c6-42c7-9025-4d0de2809278.png?resizew=230)
(1)俯视图中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
(2)这个几何体最少由
(3)能搭出满足条件的几何体共
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/3b3779b4ea5477aebfe85113b0de1d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/395424943f098d2c9a83d80039018429.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b72ac611ae66b86761e080761d9aabc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfd121f4aeca8a78a320fca1fd1c4d07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c78f9e052c973b353c0823141a543cf.png)
(1)如图1,若装饰带水平环绕,则瓶子侧面被装饰带覆盖的面积为
(2)如图2,若装饰带斜贴侧面环绕,装饰带的最高点与最低点高度差为4cm,则瓶子侧面被装饰带覆盖的面积为
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/17/940ab0b2-a08f-4e56-bb3b-f1244b7393be.png?resizew=206)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7b398c95494eddc79939f16e66cf4da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa57d7c189fcfd360247063053fc2f8.png)
(2)如图3,将两种日晷的“晷针”重合,n小时后,两种日晷对应的时刻一致,即两种晷“晷针”的影子所在的直线相交于点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d4e8502106802f1485c3b0f28f2664.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
三、解答题
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/25/e47aa4cc-bdac-42eb-86a8-d1439e2a1174.png?resizew=114)
(1)请你分别画出从正面和从左面看到的这个几何体的形状图;
(2)若在所搭几何体的基础上(不改变原几何体中小立方块的位置),继续添加大小相同的小立方块,以搭成一个大正方体,至少还需要_______个小立方块;
(3)①图中的几何体的表面积(包括与桌面接触的部分)为_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ce13774b09ff2edddaf21a072cf60a.png)
②若新搭一个几何体,且满足如下三个条件:图中从上面看到的几何体的形状图不变,小立方块的总数不变,从上面看到的小正方形中的数字可以改变,则新搭几何体的表面积(包括与桌面接触的部分)最小值和最大值分别为_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ce13774b09ff2edddaf21a072cf60a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ce13774b09ff2edddaf21a072cf60a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/25/2bcdb65c-4cc7-4882-9d04-eaff54484a70.png?resizew=408)
(1)如图①所示,用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369eb8ad56da7dc1cdb7c43762be4bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4c355f11471a38f5583a434a1ddeb3.png)
(2)如图③、④所示,用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369eb8ad56da7dc1cdb7c43762be4bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4c355f11471a38f5583a434a1ddeb3.png)
②请你猜想图③、④两种不同方案所做纸盒的底面周长是否有可能相等?如果相等,请求出此时a的值.如果不相等,请说明理由.
【知识点】 几何问题(一元一次方程的应用)解读 几何体展开图的认识解读
【画图操作】如图①,三根底部在同一直线上的旗杆直立在地面上,第一根、第二根旗杆在同一灯光下的影长如图所示.请在图中画出光源的位置及第三根旗杆在该灯光下的影长(不写画法);
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/11/b41b20dc-825c-48dc-bd28-c61369e0e4f6.png?resizew=547)
【数学思考】如图②,夜晚,小明从点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/11/51e44b78-fc8c-466e-b74a-b232dce2b93c.png?resizew=102)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/11/37397e57-ab5a-4951-83ef-54349e23d0b1.png?resizew=102)
C.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/11/290063eb-e5b3-4ec8-891a-a5da0bd5c99d.png?resizew=102)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/11/7a67187e-583c-4937-bd4c-cdbe63773ba5.png?resizew=102)
【解决问题】如图③,河对岸有一灯杆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eade0ef475eea0bdb531179a2a47c51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c41f1f42f868971aa89e441501f01c5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db281746f70f790a129f2b896aae9f89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
【知识点】 相似三角形的判定与性质综合 中心投影解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1083c05b9c3331d826d8da3b669d639a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f328ba89c0a92a4447788b65571f7aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f71a41641aa0d0e45a3c03d3d2c1196b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/9fa594d4-054a-4c03-a701-610800882d90.png?resizew=314)
【基础研究】如图2,在长、宽、高分别为a,b,c
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2516949cc86e3a41b818422fb51142c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
(1)观察发现:蚂蚁从A点出发,为了走出最短路线,根据两点之间线段最短的知识,并结合展开与折叠原理,一共有3种不同的爬行路线,即图3、图4、图5所示.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/8d9b4122-56eb-4c85-8c6b-09b6b434e99f.png?resizew=353)
填空:图5是由______面与______面展开得到的平面图形;(填“前”、“后”、“左”、“右”、“上”、“下”)
(2)推理验证:如图3,由勾股定理得,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/155fc572dfba69af9ed28b7db2954bbb.png)
如图4,由勾股定理得,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a823e298eb38bfc58d626e1767f24a8c.png)
如图5,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c801f68e843abd483f89f775711412d.png)
要使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c92b5799d12ea37de46d7c942ce7a9.png)
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce613eaa5df46a50174085ef5d1087fb.png)
……(
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/156c2870919dd70c3a67192dece9eb99.png)
∴选择如图______情况,此时
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e29657fd0f469f020e6bba5b4a1c9cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c92b5799d12ea37de46d7c942ce7a9.png)
(3)【简单应用】如图6,长方体的长,宽,高分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba511fa2ef72ea8dba7d7a821e74356c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/d349f85f-9a59-4f8a-9039-aa5ad53e78bd.png?resizew=123)
(4)【问题回归】
最后让我们再回到那道十九世纪英国报纸上发表的“蚂蚁爬行”的问题(如图1),那只蚂蚁所走的最短路程是______m.
活动一 探究某地正午太阳光下长方体高度与影子的关系.
如图1是长方体在正午阳光下投影情况,图2是图1的俯视图,通过实验测得一组数据如下表所示:
![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
![]() | ![]() | 30 | ![]() | ![]() | ![]() |
![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d8a37fe032f2be78a4a4e12fbf49e80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e434f318f5ea76b384720e6fe887393.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54bd313f31313e0c88d1faa223d05434.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
活动二 设计该地房子的数量与层数.
在长方形土地上按图3所示设计
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49e60fbe6820130fb20abc555a94b5ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49e60fbe6820130fb20abc555a94b5ea.png)
【任务3】请你按下列要求设计,并完成表格.
(1)所有房子层数总和超过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3864983798fe836a591e13783fd9e82.png)
(2)正午时每幢房子的影子不会落在相邻房子的墙上.
方案设计 | ||
每幢楼层数 | ![]() | 层数总和 |
_______________ | _______________ | _______________ |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db7ea03277f8408fabe5b327cc34838f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db7ea03277f8408fabe5b327cc34838f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd3d20432c7f896e86fa65a5c8323d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa29fe6cd9eb51c184f6299d437375cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8684b6c8748bf6716986e9093380b4d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37d65e051e943ab28fa57aee2fb57994.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afc6f4c1f3cec48c3fd144ba71d568b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8832c5450a61500ccbf73d95e16f449.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dafc9d9d73242972e40548fb17142f5e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/13/671d6d78-d1be-4966-9a07-61f43a3d4cea.png?resizew=179)
(1)在图上画出一条太阳光的照射光线;
(2)求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fb85aa4871eb1dfb392613d429a9314.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e925ded9f9d60ae3519b8093dd567beb.png)
(3)求出旗杆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db7ea03277f8408fabe5b327cc34838f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3e5af20b2f8c1fba4470f9650989e51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b14069d21d32c724f0ebe3e311f114c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5615812990deef255366042987977c58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3e5af20b2f8c1fba4470f9650989e51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b14069d21d32c724f0ebe3e311f114c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5615812990deef255366042987977c58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf4e20ea341827ce5f9552daee39462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5489f76e59e56f93f547b330b88c4a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899bf9cadae2ccdb14cbc87d4f280ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d685c54089867c395a4c49ba01b1237.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/29/79c9fffd-ffdc-45d8-b42c-c7e31cdbaa87.png?resizew=449)
(1)有序数组 (3,2,4)所对应的码放的几何体是_____;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/29/d574f4d1-eafa-4a84-b3df-5b72cb4184d0.png?resizew=695)
(2)图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/29/2a9a18fc-5abd-46c3-b679-6a3c4f6012ac.png?resizew=221)
(3)为了进一步探究有序数组
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d685c54089867c395a4c49ba01b1237.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4fc0576922176ff14de10c71f12f738.png)
![](https://img.xkw.com/dksih/QBM/2020/2/22/2404706483183616/2405338393083904/STEM/1ad4c00aa9a446b79cba07446ebdb0e5.png?resizew=517)
根据以上规律,请直接写出有序数组
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d685c54089867c395a4c49ba01b1237.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4fc0576922176ff14de10c71f12f738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29c964a98950c10b279c3c167fc55444.png)
(4)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb354c9260eb79f0e214191bb4b20870.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da45c443af7994a26ffa9d8894e7262.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da45c443af7994a26ffa9d8894e7262.png)