如图,在平行四边形
中,已知点
在
上,点
在
上,且
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ce1475f537b4ad21775bfaa16daa0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86d1125b47dec1c5e93143ee59ad862a.png)
更新时间:2024-04-19 11:50:34
|
相似题推荐
解答题-证明题
|
较易
(0.85)
【推荐1】如图,在
中,D为
上一点,E为
中点,连接
并延长至点F使得
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/12/41019b56-f5fc-4dbc-a101-c577e330c002.png?resizew=138)
(1)求证:
;
(2)连接
,若
°,
平分
平分
求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](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/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4d3d4307b9f64d8c99f864941f37874.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/12/41019b56-f5fc-4dbc-a101-c577e330c002.png?resizew=138)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b00a5239269d72d6f9632e7d77347106.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f7ddb4a108727fea2212d6504ee01d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0781618b85b326f83481b521e60f326.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18ee23c0a763d62709a40b31cb7ac85e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
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【推荐2】如图,已知
和
都是等腰直角三角形,
,
,
,连接BD交AC于点F,连接CE交AD于点G,BD与CE交于点P.求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26813466e2ee49a493881a4384fc8748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d212c1709b8e72a055cf1b5381ef64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0433f8116768b42642a7f7e5977ce6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/3d76b988-6637-401f-8f29-37a8c47861f3.png?resizew=171)
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解答题-证明题
|
较易
(0.85)
【推荐1】如图,已知
的对角线
,
交于点O,E,F分别是
,
的中点.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/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf2e3236ea30ee2c37928b98041f13a.png)
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【推荐2】如图,在平行四边形ABCD中,AE:EB=1:2,DE交于点F.
![](https://img.xkw.com/dksih/QBM/2019/11/28/2343601518215168/2345143717306368/STEM/4da5210ecad74dca816f5f2825134c0f.png?resizew=168)
(1)求AE:DC的值.
(2)△AEF与△CDF相似吗?若相似,求出相似比,请说明理由.
(3)如果
,求
.
![](https://img.xkw.com/dksih/QBM/2019/11/28/2343601518215168/2345143717306368/STEM/4da5210ecad74dca816f5f2825134c0f.png?resizew=168)
(1)求AE:DC的值.
(2)△AEF与△CDF相似吗?若相似,求出相似比,请说明理由.
(3)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ee82e271a1e70ccf059ca2e629a9d25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d323d679d040502d597a63b42379632a.png)
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