如图,图1共有8个小方块,图2共有
个小方块,图3共有
个小方块,按此规律,若图
共有
个小方块,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c748e40ba21ac5063d3bccaa57ef278.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c696d722e1b4b938c7a956ff83f733bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f20db15661b3493037797ac8c3221ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/12/b54ebdf5-0d3d-4607-bc9b-6941229ec0f6.png?resizew=314)
更新时间:2024-02-12 18:40:46
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真题
【推荐1】设
的面积为1.
如图1,分别将
,
边2等份,
,
是其分点,连接
,
交于点
,得到四边形
,其面积
.
如图2,分别将
,
边3等份,
,
,
,
是其分点,连接
,
交于点
,得到四边形
,其面积
;
如图3,分别将
,
边4等份,
,
,
,
,
,
是其分点,连接
,
交于点
,得到四边形
,其面积
;
…
按照这个规律进行下去,若分别将
,
边
等份,…,得到四边形
,其面积![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447a9718a502491b47072ce013c26a2f.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
如图1,分别将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/522230546d4b802094e86ceb48c2ba38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b7287da1de38b00f62a255ab1b9c6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37bc5152b5b0668f2328dfe64cc761a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/933db3246b7672b82dd58f0c5a2a0ef5.png)
如图2,分别将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c296e45b84cf67a98939aa7334e7d478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/522230546d4b802094e86ceb48c2ba38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4f150ab98bde511e0f65d9bafab031.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a8085882b23d697348eae30de9739f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177c27d20eef8a55f55232be139fc0b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/527c4aa78a9f682361076d52c0e1f507.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/801bbf7a40032a9c3442e8f4023f245d.png)
如图3,分别将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c296e45b84cf67a98939aa7334e7d478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8ce8c07e34224e2d25130ed27c9a98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/522230546d4b802094e86ceb48c2ba38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4f150ab98bde511e0f65d9bafab031.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b4dbe5d5c8b9c28c6f5eb92278a9f17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0e0f43ddba92ca23f0c098d756f8bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cd3e83133639d81f381d54f1ef559af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1282962a17a48a18edf733204054d67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06752fcc8d2610873d824380708b03f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2f54d787247652731b101e635af1ef6.png)
…
按照这个规律进行下去,若分别将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/058f14906e76748a2a25dc8b2c163244.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a1f26044873e9b5f1ad41fa00c0556c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447a9718a502491b47072ce013c26a2f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/20/7d681f19-20cb-48a8-9917-ef2b6e13742b.png?resizew=422)
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【推荐2】如图,点
在射线
上,点
在射线
上,
,
,△
、△
、
△
均为等边三角形,则
的长为__ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a72d83ad808de61a81869a50819c101c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3499b5aea4aad7e6f9954b9dafa4069c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddb9aa05be1d376e7ba48259ef8af659.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78637ce9186a85d2a7acddff1f8f3f1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1acf532db82b97a574517f5a2fae5f58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16160e675d020c4e937bb906fe0762bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07096af3b99fd1cb11c31f19a2c6408e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d9994407d261fc460c8032aad8ef364.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6561552db3503edb00667be141198c1.png)
![](https://img.xkw.com/dksih/QBM/2020/7/3/2498018764029952/2498690740322304/STEM/83df777a52cf441bbef8697785f2b679.png?resizew=143)
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【推荐1】一块矩形耕地大小尺寸如图所示,要在这块地上沿东西、南北方向分别挖3条和4条水渠.如果水渠的宽相等,而且要保证余下的可耕地面积为8700m2,那么水渠应挖的宽度是_________ 米.
![](https://img.xkw.com/dksih/QBM/2021/8/8/2781601500684288/2782559163129856/STEM/616c64fb-8041-437a-8f5c-be5371550416.png)
您最近一年使用:0次