如图已知点
为
上一点,
,
,
、
分别为
和
的中点,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd0763b031b7e6b6d87ce3554ac482d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c97ad01f82999c2e12bc6e72b21e021.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/2021/1/22/2641787157225472/2650298211991552/STEM/cfbfa80e-781b-49b1-bffc-01b02810bdfb.png)
20-21七年级上·山东济南·期末 查看更多[3]
山东省济南市平阴县2020-2021学年七年级上学期期末数学试题(已下线)专题20 双中点线段-【微专题】2022-2023学年七年级数学上册常考点微专题提分精练(北师大版)(已下线)第10讲 直线、射线、线段(5大考点)-2022-2023学年七年级数学上学期考试满分全攻略(人教版)
更新时间:2021-02-03 21:08:25
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解答题-问答题
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适中
(0.65)
【推荐1】如图,直线
上有
、
两点,线段
.点
在直线
上,且满足
,点
为线段
的中点,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c49eebe6f8dfb225b51acdb0290bf8ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91283c5182d4537a095e2e30f5f4bcc1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c9cdcfdd0f7fc1f2dcb161ca3668f55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0d801edd85c816522ae1e40b83ae9ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/15/004866be-3031-43ac-9a4e-7a1936ae80cc.png?resizew=214)
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解答题-问答题
|
适中
(0.65)
【推荐2】如图,
,延长
到
,使
,
是线段
的中点.
![](https://img.xkw.com/dksih/QBM/2023/7/27/3289811321741312/3291466704494592/STEM/12fd630d925d4d32954715a7a114f3ed.png?resizew=361)
(1)求线段
的长度;
(2)若点
是线段
的三等分点,直接写出线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cee49e97546d466ba3ee630e08cdc3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e0cdfb6d592897c6485ce1741677846.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2023/7/27/3289811321741312/3291466704494592/STEM/12fd630d925d4d32954715a7a114f3ed.png?resizew=361)
(1)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
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解答题-问答题
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适中
(0.65)
【推荐1】生活中有人喜欢把请人传送的便条折成图丁形状,折叠过程是这样的(阴影部分表示纸条反面):
回答下列问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/fc5a37ea-5734-4178-8fff-f1e6ce8bef28.png?resizew=471)
(1)如果长方形纸条长
,宽为
,并且开始折叠时起点M与点A的距离为
,那么在图②中的线段
____________,图②中阴影部分的面积为____________
.
(2)如果长方形纸条长
,宽
.
①开始折叠时起点M与点A的距离为
,那么在图③中的线段
__________;(用含x的代数式表示)
②为了美观,希望折成图④后两端超出点P的长度相等,则图④中超出部分
___________;(用含x的代数式表示)
(3)如果长方形纸条宽
,折成图④形状,并且一端超出P点
,另一端超出P点
,信纸折成的长方形纸条长为____________
;(用含x的代数式表示)
回答下列问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/fc5a37ea-5734-4178-8fff-f1e6ce8bef28.png?resizew=471)
(1)如果长方形纸条长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d6d2cf65a9f38e2d552eeacbcc3cb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c78d0ab561d0c9bb9099772c596af8bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976260cbf5e30856d4fd37a4b0a671a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56890d468bfd1b62468e7ca634b7f852.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e31351d7b971bda5c97c662fc71103a.png)
(2)如果长方形纸条长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d6d2cf65a9f38e2d552eeacbcc3cb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e848017b41fd012227501eb52506c99.png)
①开始折叠时起点M与点A的距离为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976260cbf5e30856d4fd37a4b0a671a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29f20744b52b3ead19a94d0d4a5ed835.png)
②为了美观,希望折成图④后两端超出点P的长度相等,则图④中超出部分
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5745e2dc1d5308872c68ae932cd13ffa.png)
(3)如果长方形纸条宽
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e848017b41fd012227501eb52506c99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c78d0ab561d0c9bb9099772c596af8bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976260cbf5e30856d4fd37a4b0a671a7.png)
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适中
(0.65)
【推荐2】如图,
为线段
上一点.
,
,
,
分别为
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/27/69dd59e1-3964-4b8f-b7d9-1e377079e3e6.png?resizew=280)
(1)若
,
,求
的长;
(2)若
,求
与
满足的关系式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa375c3888b332f24e7d0f9b9600c694.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/890aea25780f7ba34adb23e799808462.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/27/69dd59e1-3964-4b8f-b7d9-1e377079e3e6.png?resizew=280)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42dc22436b2a4edf3d6e15e1e5a15343.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fac3649308b528fd56545ba102dc42d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d8188656c7d81e02082908a0afebbed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次