题型:填空题
难度:0.94
引用次数:234
题号:18910379
补全证明过程及依据,如图,
点为
上的点,
为
上的点,
,
.试说明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5adaae99b4ac308549134169e69247a6.png)
解:
(已知)
( )
∵
(等量代换)
∴
______( )
∴
( )
又∵
(已知)
∴
( )
∴
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e53497af8899cb299d762f1a4f46a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1beff025b32f688316009552d2fd8e1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5adaae99b4ac308549134169e69247a6.png)
解:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e53497af8899cb299d762f1a4f46a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e50ce9ef89a466df68124a1dccff5663.png)
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba02910a01689f636c71116e96dfdf33.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58a20ea69475dcf57a5ff18c13eceaaa.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e80c44699533e3deda3f3763f8aaaf58.png)
又∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1beff025b32f688316009552d2fd8e1a.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e49ed40c235ceab2be97db0629b042.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5adaae99b4ac308549134169e69247a6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/17/f8569e65-a93e-4bd1-a1ee-38d817bddb79.png?resizew=205)
更新时间:2023-05-09 07:49:16
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