如图,在四边形
中,连接
、
,点
、
在
上,
,点
,
分别为
、
的中点,连接
、
、
、
,且四边形
为平行四边形.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/7/bc5eaeeb-bcc9-42e0-be99-0dc0235d945b.jpg?resizew=190)
(1)求证:四边形
是平行四边形;
(2)若
,
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ce1475f537b4ad21775bfaa16daa0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0e57a13c665af88f326c9890072bf73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83f1f880e5ffbff036953acaca90c41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a16f5621716bfef7a056a3f2712feb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dc768c4b7be884a0b7a5ad522f80b5d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/7/bc5eaeeb-bcc9-42e0-be99-0dc0235d945b.jpg?resizew=190)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56ee81929c987732fcb379802eeef7a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5489aaa6dc00789fcf126bf2fd744a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
更新时间:2024-04-08 06:19:40
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【推荐1】已知,△ABC中,∠C=90°,G是三角形的重心,AB=8,
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【推荐2】如图,在正方形网格中,
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(1)在图1中作
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/22/22698997-1067-4934-b029-9df139695ce1.jpg?resizew=325)
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【推荐1】如图,过
的顶点A作
,且
,再作
,且
,
交
于E,
交
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;
(2)
.
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(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1a455162115cbd7c8ac31c50c5ad905.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f03e2a5475ace27393a7b3ee040aa159.png)
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【推荐2】在正方形ABCD中,E、F分别为BC、CD的中点,AE与BF相交于点G.
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【推荐1】如图,四边形
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/11/4664aa5d-73b1-45af-a059-c4ef3986b694.png?resizew=165)
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是平行四边形
(2)请你在不添加辅助线的情况下,添一个条件 ,使四边形
是菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a23f35ebcd9799d82c1e41c09781a4c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/11/4664aa5d-73b1-45af-a059-c4ef3986b694.png?resizew=165)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)请你在不添加辅助线的情况下,添一个条件 ,使四边形
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