如图,
是线段
上一点,
是线段
的中点
,
.求
和
的长度.
![](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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f25936291abb6432ed5a710ebf0ea195.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50a81c5699a01b6b12b16ff9bce6d6ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/2023/1/30/3164079992471552/3165507664740352/STEM/f1453ef53a0c40b1a5e10ae6f3b615ba.png?resizew=261)
更新时间:2023-02-01 19:04:44
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【推荐1】画直线
,并在直线
上任取三个点
,使
,分别画线段
的中点
求线段EF的长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7550ecd1bea3a34d15308062743747f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374fe9986ebbc986fc422e514ab93a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eba48b5a4d2e93f08a64aef40cfce284.png)
![](https://img.xkw.com/dksih/QBM/2020/11/26/2601310269833216/2605026966937600/STEM/8b998739-0a3f-4905-89eb-a31c72cb47d5.png)
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【推荐2】已知点C,D在线段AB上(点C,D不与线段AB的端点重合),AC+DB=
AB.
(1)若AB=6,请画出示意图并求线段CD的长;
(2)试问线段CD上是否存在点E,使得CE=
AB,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
(1)若AB=6,请画出示意图并求线段CD的长;
(2)试问线段CD上是否存在点E,使得CE=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
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【推荐1】如图所示,点C是线段
上一点,
,点D是线段
的中点.
(1)求线段
的长;
(2)若E是线段
的中点,F是线段
的中点,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c764822310cb89b585278ed3c8ba0491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/14/bd276388-033e-4eb1-a30d-d933259dd0b6.png?resizew=291)
(1)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
(2)若E是线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
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【推荐2】如图,点M,C、N在线段
上,给出下列三个条件:①
、②
、③
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/17/b8bb5b87-3861-4596-bec2-15d537cf5cc8.png?resizew=248)
(1)如果_________,那么__________.(从上述三个条件中任选两个作为条件,余下的一个作为结论,填序号,完成上面的填空,并说明结论成立的理由.)
(2)在(1)的条件下,若
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcf945229454a34f43ef40fa7824fc2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d810b0ec0461f48b6e109b193f346da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86296fdc5cfca76ca0f59a685b05db1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/17/b8bb5b87-3861-4596-bec2-15d537cf5cc8.png?resizew=248)
(1)如果_________,那么__________.(从上述三个条件中任选两个作为条件,余下的一个作为结论,填序号,完成上面的填空,并说明结论成立的理由.)
(2)在(1)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d30fe8ed227a01b32106fb66768b3a35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
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