完成下列证明过程.
如图,已知
,
,D,C在
上,且
,求证:
.
证明:∵
,
∴
_____________
_________(__________________________),
∵
,∴
,即______________,
在
和
中,
,__________________________,
∴
___________________.
如图,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd81adb13f5a7550b0f94f770900a613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a510a3eb906b3ef0760b0d1723d11ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/967578d2c4086aef3fda57ed4cdae5c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac61f3477e623aa4f924a82bd7a06ce4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/15/060dd964-ca7d-476a-a78a-6d907d24dcce.png?resizew=143)
证明:∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd81adb13f5a7550b0f94f770900a613.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/665ffcdb7c57534dc184cc840471f2f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f617fa80f09fc245909492f5335ea5c.png)
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/967578d2c4086aef3fda57ed4cdae5c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12e592bf1ebeb23e7d865b2825c9eb00.png)
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a510a3eb906b3ef0760b0d1723d11ae.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac61f3477e623aa4f924a82bd7a06ce4.png)
更新时间:2023-09-14 20:33:00
|
【知识点】 用SAS直接证明三角形全等(SAS)解读
相似题推荐
解答题-证明题
|
较易
(0.85)
名校
【推荐2】在
中,过A作
,交
的平分线于点D,连接
,交
于点F,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3585c99b8c60b04667b552f2aaf8fb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/17/82f403fd-c29c-4ac4-b8fb-0519676e3620.png?resizew=386)
(1)如图1,求证:四边形
是菱形;
(2)如图2,G是
的中点,H是边
的中点,若
,
,请直接写出图2中与
全等的三角形(不含
本身).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dceb5cc71fc50f20649f6b9535fd914.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3585c99b8c60b04667b552f2aaf8fb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/17/82f403fd-c29c-4ac4-b8fb-0519676e3620.png?resizew=386)
(1)如图1,求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9beeedb7ddaac2cd3d37151d058ab7fb.png)
(2)如图2,G是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7777a27259d26724229b604df42656c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f03a4ded4139849e9dce4deae876a78c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f03a4ded4139849e9dce4deae876a78c.png)
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