如图,在
中,对角线
与
相交于点O,点
分别在
和
的延长线上,且
,连接
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86d1125b47dec1c5e93143ee59ad862a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b1efb5d9072a67be9d5497a783016c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d99bb3ab66b8884bf23cffe1bddcb33.png)
![](https://img.xkw.com/dksih/QBM/2021/8/27/2795069774028800/2795108077379584/STEM/17a2f4f40e104dc58fd0228f241d4ce7.png?resizew=147)
更新时间:2021-08-27 11:24:51
|
相似题推荐
解答题-证明题
|
较易
(0.85)
【推荐1】如图,
,
,
.
求证:
.
证明:∵
,
∴(___________).
又∵
,
∴
___________
,
即___________=___________
在
和
中,
,
∴
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a510a3eb906b3ef0760b0d1723d11ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd81adb13f5a7550b0f94f770900a613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c55ee522f41c43253050e92b3c8de31.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/22/6bd79084-cc3f-4bd6-830f-84941f92bedb.png?resizew=117)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ca10806fc8c3c3efd6859f526b76900.png)
证明:∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd81adb13f5a7550b0f94f770900a613.png)
∴(___________).
又∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c55ee522f41c43253050e92b3c8de31.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50625b22efce834456886a41b89672bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac175010746fd4c90a55cb9081a1ffb6.png)
即___________=___________
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/5c36379bb116e6ef8b0608e7f2ef72ec.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ca10806fc8c3c3efd6859f526b76900.png)
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解答题-问答题
|
较易
(0.85)
【推荐1】如图,平行四边形
的两条对角线
、
相交于点
.图中有哪些三角形是全等的?
![](https://img.xkw.com/dksih/QBM/2013/5/10/1573650403786752/1573650409938944/STEM/8aee97900ac94716af2dafe5425db336.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/2013/5/10/1573650403786752/1573650409938944/STEM/58e02080c8724ab2895668d1a4e1a7d7.png)
您最近一年使用:0次
解答题-证明题
|
较易
(0.85)
【推荐2】如图,E,F是▱ABCD的对角线AC上的两点,且AF=CE.
求证:(1)△ADE≌△CBF;
(2)DE∥BF.
求证:(1)△ADE≌△CBF;
(2)DE∥BF.
![](https://img.xkw.com/dksih/QBM/2021/5/15/2721353355395072/2791859111067648/STEM/82ee372d-bcc7-4987-9a2c-453b1855df14.png?resizew=255)
您最近一年使用:0次