如图,已知点
为线段
的中点,点
为线段
上一点,点
为线段
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/8/c48b9b01-2524-4b2b-b5e2-7f8217fcde82.png?resizew=228)
(1)若线段
,
,求线段
的长;
(2)若线段
,
,求线段
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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/8/c48b9b01-2524-4b2b-b5e2-7f8217fcde82.png?resizew=228)
(1)若线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dd90bfa2987b84df430498021d5f648.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/729c393ae717c53928d74cd901ac8b7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
(2)若线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65d45e33ce8b0685224cc5ffdf4a0829.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d2231c7a2875ab6d423dff3ead4069.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
更新时间:2023-10-03 10:41:10
|
相似题推荐
解答题-计算题
|
较易
(0.85)
【推荐1】如图,线段
,点B在线段
上,C为
的中点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/16/9ee5ddb7-a6ec-4d1d-9c83-86317e8e9776.png?resizew=384)
(1)图中共有多少条线段;
(2)求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb24eba36f5a47641099ec8012739a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c11befe0210f97256041fce3f94e7c93.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/16/9ee5ddb7-a6ec-4d1d-9c83-86317e8e9776.png?resizew=384)
(1)图中共有多少条线段;
(2)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐2】已知平面内三点
,
,
.
![](https://img.xkw.com/dksih/QBM/2021/7/15/2764602152894464/2801758899585024/STEM/39cd0f2bd2d94213a95de5b0d7cbc449.png?resizew=361)
动手操作:在如图所示的平面直角坐标系中描出A,B,C三点,并连接
,
;
观察发现:写出
,
的中点坐标,观察中点坐标与线段两个端点的坐标,你能发现什么规律?
猜想验证:连接
,直接写出
中点的坐标;
总结应用:已知点
,
,写出
中点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a26e951d6d2369e8da79a793a93a66a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7849ef4942c737be4aa73d95d00475cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1b04116ea5a31d20c867bb199bd542c.png)
![](https://img.xkw.com/dksih/QBM/2021/7/15/2764602152894464/2801758899585024/STEM/39cd0f2bd2d94213a95de5b0d7cbc449.png?resizew=361)
动手操作:在如图所示的平面直角坐标系中描出A,B,C三点,并连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
观察发现:写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
猜想验证:连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
总结应用:已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/741b0a201ede8fc310f75288b1d6a4bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef946500701e107013107841e7fd281c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
您最近一年使用:0次