如图,线段
.C是线段
的中点,D是线段
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/15/a33d349c-a86d-4fd9-b6ed-41b31ca8202b.png?resizew=277)
(1)求线段
的长;
(2)在线段
上有一点E,满足
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44a1f73190215b1c9d45a3dd9e6b66ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/15/a33d349c-a86d-4fd9-b6ed-41b31ca8202b.png?resizew=277)
(1)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b5eedc7993aa96ba1487d9020b3a8eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
更新时间:2024-03-15 09:37:15
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相似题推荐
解答题-问答题
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适中
(0.65)
名校
【推荐1】如图,
,
是线段
上的两个点,且
,点
是线段
的中点,
.
(1)求线段
的长;
(2)若
是线段
上一点,满足
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/766590c9ec5f0ba5da61a76609370d66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/527f26a3eb27adc96df06b64d154f391.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/21/73da8ad3-cbc7-484b-b8dc-688c41530625.png?resizew=433)
(1)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d79fcf859dd4a91bc077b18c124b9ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
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解答题-作图题
|
适中
(0.65)
【推荐2】如图,C是线段AB的中点.
若点D在线段CB上,且DB=2cm,AD=8cm,求线段CD的长度;
若将
中的“点D在线段CB上”改为“点D在线段CB的延长线上”,其它条件不变,请画出相应的示意图,并求出此时线段CD的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://img.xkw.com/dksih/QBM/2017/12/25/1846083882647552/1851113834110976/STEM/0356c5abc88b4bba81673c8db0a8fbe6.png?resizew=155)
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解答题-问答题
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适中
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【推荐1】如图所示,
、
两点把线段
分成三部分,且
,P是
的中点,
,求
的长.
![](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/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/635fb11a58edae4ff89dc374b23856cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa29fe6cd9eb51c184f6299d437375cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99297496facab129b9af397a880cd33e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/27/22bb8e65-c23f-4406-a5e2-571ed4d2ad76.png?resizew=351)
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解答题-问答题
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适中
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【推荐2】如图,已知点
是线段
上一点,点
是线段
的中点,若
,
(1)求线段
的长;
(2)若点
是直线
上一点,且
,点
是
的中点,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9238ba02b93f80a9467af97d5c220da.png)
(1)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9df8d320bee31b074de41d98a662f9a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://img.xkw.com/dksih/QBM/2021/1/22/2641860840357888/2643799731945472/STEM/34a73baf-866b-4c4d-ac00-3ce1a01b0aa7.png)
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解答题-问答题
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适中
(0.65)
【推荐1】[建立概念]
直线a上有三个点A,B,C,若满足
,则称点C是点A关于点B的“半距点”.如图①,
,此时点C就是点A关于点B的一个“半距点”.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/2/6e1173e4-ae4f-4957-b870-164c8d1ecf57.png?resizew=262)
[概念理解]
如图②,直线l上有两个点M,N,且
.若点P是点M关于点N的“半距点”,则
______
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/2/4726ed2f-9f5d-4f83-a261-ce827faf9e41.png?resizew=262)
[拓展应用]
如图③,在数轴上,点A从原点出发沿数轴向左匀速运动,同时,点B也从原点出发沿数轴向右匀速运动,出发4秒时,两点相距16个单位长度.已知点B的速度是点A速度的3倍.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/2/069bd897-0f8e-42a8-99b0-0dfc9c3bcca7.png?resizew=488)
(1)分别求出点A和点B每秒各运动多少个单位长度,并在数轴上标出A,B两点从原点出发运动4秒时的位置;
(2)若A,B两点从(1)中标记的位置开始,仍以原来的速度同时沿数轴向左运动,则再经过多少秒,点B到达点A关于原点的“半距点”?
直线a上有三个点A,B,C,若满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebe44ff9f829f6c034682572ad00e366.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebe44ff9f829f6c034682572ad00e366.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/2/6e1173e4-ae4f-4957-b870-164c8d1ecf57.png?resizew=262)
[概念理解]
如图②,直线l上有两个点M,N,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fee5e9998f6e9c6d1c54a7c6edfbe543.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b1c57de55e4dd64771167b6f41ee13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/2/4726ed2f-9f5d-4f83-a261-ce827faf9e41.png?resizew=262)
[拓展应用]
如图③,在数轴上,点A从原点出发沿数轴向左匀速运动,同时,点B也从原点出发沿数轴向右匀速运动,出发4秒时,两点相距16个单位长度.已知点B的速度是点A速度的3倍.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/2/069bd897-0f8e-42a8-99b0-0dfc9c3bcca7.png?resizew=488)
(1)分别求出点A和点B每秒各运动多少个单位长度,并在数轴上标出A,B两点从原点出发运动4秒时的位置;
(2)若A,B两点从(1)中标记的位置开始,仍以原来的速度同时沿数轴向左运动,则再经过多少秒,点B到达点A关于原点的“半距点”?
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解答题-作图题
|
适中
(0.65)
名校
【推荐2】如图,已知线段
,延长线段
至点
,使
,
是
中点.
![](https://img.xkw.com/dksih/QBM/2023/2/23/3180924398108672/3183044242309120/STEM/abb7751ce98a46beab8207f8559fb52a.png?resizew=93)
(1)根据题意,把图形画出来.
(2)若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/151f7aef7d0f56e18562f5a4030cf815.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/2023/2/23/3180924398108672/3183044242309120/STEM/abb7751ce98a46beab8207f8559fb52a.png?resizew=93)
(1)根据题意,把图形画出来.
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432043f79e122f291c47453013042704.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
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