如图,已知B,C是线段
上的任意两点,M是
的中点,N是
的中点.
![](https://img.xkw.com/dksih/QBM/2022/12/11/3128602206257152/3129316174118912/STEM/819aba883ae64fef81f5a51a10a0625b.png?resizew=329)
(1)若
,
,
,求线段
的长度;
(2)若
,
,求线段
的长度;
(3)请你说明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/2022/12/11/3128602206257152/3129316174118912/STEM/819aba883ae64fef81f5a51a10a0625b.png?resizew=329)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca7e1a727ba332984ad857b3d25344d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc89dbda86a8c05e4fb4aa46c642b303.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(3)请你说明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91ddee79fc334f91d9b960bbed86111c.png)
20-21七年级上·安徽淮北·阶段练习 查看更多[4]
安徽省淮北市五校联考2020-2021学年七年级上学期第三次月考数学试题安徽省蚌埠市第二十中学2022-2023学年七年级数学上学期第三次月考测试题(已下线)猜题06 平面图形的认识(一)(拔高必刷32题9种题型专项训练)-2023-2024学年七年级数学上学期期末考点大串讲(苏科版)(已下线)专题6.6与线段相关的运算(分层练习)(提升练)-2023-2024学年七年级数学上册基础知识专项突破讲与练(苏科版)
更新时间:2022-12-12 15:52:57
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适中
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【推荐1】如图,在
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(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36691f0269294ecae8f00b7bce97756c.png)
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(2)
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解答题-作图题
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适中
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【推荐2】如图,已知在平面上四点A,B,C,D,按下列要求画出图形;
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解答题-问答题
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适中
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名校
【推荐1】如图,
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解答题-问答题
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适中
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【推荐2】小明在学习了比较线段的长短时对下面一道题产生了探究的兴趣:
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上,
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,
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/10/43770078-6af4-4554-97cb-d9003e1b0fae.png?resizew=195)
(1)根据题意,小明求得
______.
(2)小明在求解(1)的过程中,发现
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设
,
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重合),小明提出了如下三个问题,请你帮助小明解答.
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,
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②如图2,
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③若
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的
等分点,即
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(2)小明在求解(1)的过程中,发现
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d42e97eee705d164e6ac6de9ecd6d1f.png)
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②如图2,
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③若
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