(1)如图,点C在线段
上,点M、N分别为
、
的中点.如果
,
,求线段
、
的长;
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/b36ab058-e262-4d62-aad6-b76b8a9c851c.png?resizew=280)
(2)如果点C在线段
的延长线上,M、N分别是线段
、
的中点,且满足
,求
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](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/dafddfd80f69337909f6eac0f0dbfd59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e419e8db346d36cd1078b45a7c30912.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/b36ab058-e262-4d62-aad6-b76b8a9c851c.png?resizew=280)
(2)如果点C在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](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/156346618e16dedfba1c9278e2d9fc7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
更新时间:2023-02-26 13:55:46
|
相似题推荐
解答题-作图题
|
适中
(0.65)
【推荐1】如图,已知线段a,b,用直尺圆规作图.(温馨提醒请保留作图痕迹,相应字母标注到位,不要求写出作法.)
![](https://img.xkw.com/dksih/QBM/2022/1/20/2898566606766080/2917694841438208/STEM/fd2756f5-d9e7-446a-9c97-9a228e09ef76.png?resizew=301)
(1)作线段
;
(2)作线段
.
![](https://img.xkw.com/dksih/QBM/2022/1/20/2898566606766080/2917694841438208/STEM/fd2756f5-d9e7-446a-9c97-9a228e09ef76.png?resizew=301)
(1)作线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64deec0e17271499a9742c9bdbb2ee8a.png)
(2)作线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcfa8ea83afeae98b4a2a70ac454f7a3.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】综合与实践
问题情境:
数学活动课上,王老师出示了一个问题:
如图1,已知线段
,点C在线段
上,
,点P在线段
上,
.求
的长.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/1/61c8d223-4e9f-4f65-b666-81ff35e3d536.png?resizew=234)
(1)请解答王老师提出的问题.
实践探究:
(2)王老师改变条件,并提出新问题,点P在
的延长线上时,原题的其他条件不变,求
的长.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/1/9f37ff16-bba5-4064-8655-8d182c79bc6f.png?resizew=234)
知识迁移:
数学活动小组同学把上述线段问题改为角研究之后发现,也能提出类似问题.
该小组提出下面的问题,请你解答.
(3)如图3,已知
,射线
在
的内部,
,射线
在平面内,
.请直接写出
的度数.
问题情境:
数学活动课上,王老师出示了一个问题:
如图1,已知线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b79850d6b00a67110e77a33d1c46b5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28f9fc63aeaac7f7e359f1bcd734a90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/850842084e25eec602169f1a21240156.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/1/61c8d223-4e9f-4f65-b666-81ff35e3d536.png?resizew=234)
(1)请解答王老师提出的问题.
实践探究:
(2)王老师改变条件,并提出新问题,点P在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/1/9f37ff16-bba5-4064-8655-8d182c79bc6f.png?resizew=234)
知识迁移:
数学活动小组同学把上述线段问题改为角研究之后发现,也能提出类似问题.
该小组提出下面的问题,请你解答.
(3)如图3,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ff5c21185c13eae675906dabd3593c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebfcc6ea3a5df3a1c0104f36b3c51455.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0c49c6b958d8fdf9263673dae3a5271.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d7c672d36caf72cb2813650ea83f71d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/1/40bab97d-9b00-4df2-8237-5ab806d98cfa.png?resizew=163)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐1】已知直线l上有三点A、B、C,AB=3,AC=2,点M是AC的中点.
(1)根据条件,画出图形;
(2)求线段BM的长.
(1)根据条件,画出图形;
(2)求线段BM的长.
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐2】如图,C为线段AD上一点,点B为CD的中点,且AD=9,BD=2.
![](https://img.xkw.com/dksih/QBM/2020/1/31/2388736619823104/2389568109535232/STEM/40305758fd1d4ae5bb54d3ffb1052338.png?resizew=164)
(1)求AC的长;
(2)若点E在直线AD上,且EA=1,求BE的长.
![](https://img.xkw.com/dksih/QBM/2020/1/31/2388736619823104/2389568109535232/STEM/40305758fd1d4ae5bb54d3ffb1052338.png?resizew=164)
(1)求AC的长;
(2)若点E在直线AD上,且EA=1,求BE的长.
您最近一年使用:0次