如图,在
中,
,E为
的中点,连接
并延长交
的延长线于点F,连接
.求证:四边形
是矩形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/650c6c818df102a83ce5159e3208d01a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0a255b7e4988e013e973c382d4a6c6a.png)
![](https://img.xkw.com/dksih/QBM/2023/4/26/3224871412072448/3225427457843200/STEM/54b72b54e69a4367ac7b620dc29def6f.png?resizew=96)
更新时间:2023-04-27 10:51:52
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相似题推荐
解答题-证明题
|
适中
(0.65)
名校
【推荐1】如图,△ABC∽△DEC,CA=CB,且点E在AB的延长线上.
![](https://img.xkw.com/dksih/QBM/2021/11/2/2842666266779648/2930220589555712/STEM/48a3bc6e43e44ce1a897146da8e09c01.png?resizew=112)
(1)求证:AE=BD;
(2)求证:△BOE∽△COD.
(3)已知:CD=10,BE=5,OD=6,求OC的长.
![](https://img.xkw.com/dksih/QBM/2021/11/2/2842666266779648/2930220589555712/STEM/48a3bc6e43e44ce1a897146da8e09c01.png?resizew=112)
(1)求证:AE=BD;
(2)求证:△BOE∽△COD.
(3)已知:CD=10,BE=5,OD=6,求OC的长.
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解答题-证明题
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适中
(0.65)
【推荐2】如图,
为
的直径,
,
为
上不同于
,
的两点,且
平分
,延长
与
交于点
,过点
作
交
于点
.
(1)求证:
.
(2)若
,
,求
的半径.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb8eca20ce2c918ea4034ea15210c7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb3d9ab191469ee8d11e71d2bb332a26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c226581e14091779321c9fe91160ceef.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08e82a0052299f414cff1e7afcc5aa19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eeca4a0e252fd553c3ac8bae08d67bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/2021/1/5/2636567639023616/2669990539026432/STEM/749197bd-ec9a-44c1-85bc-75a213105130.png)
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解答题-证明题
|
适中
(0.65)
名校
【推荐1】如图,在平行四边形
中,过点D作
于点E,点F在边
上,
,连接
.
(1)求证:四边形
是矩形;
(2)已知
,若
,求
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/607cfabc1d421835b6b64109ad18f571.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/12/6102db34-8537-4f39-8643-e5634f96dd52.png?resizew=178)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87e1fe20bb0e8292e993657e14bc79a.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4f5eec0addba78f2e0cdfb7ecc59a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
您最近一年使用:0次
解答题-证明题
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适中
(0.65)
【推荐1】如图,在中,
,以点
为圆心,
长为半径的圆交
于点
,
的延长线交⊙
于点
,连接
,
是⊙
上一点,点
与点
位于
两侧,且
,连接
.
(1)求证:;
(2)若,
,求
的长及
的值.
![](https://img.xkw.com/dksih/QBM/2019/4/28/2192045818191872/2192346392969216/STEM/80c8b7bf550e48939f53024ed96c7bb9.png?resizew=125)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
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【推荐2】如图,在菱形
中,
,
,延长
到点
,使
,延长
到点
,使
,连接
、
、
、
.
![](https://img.xkw.com/dksih/QBM/2020/12/3/2606160790380544/2631165743357952/STEM/8b61846ae769419597185b64a27a1eb7.png?resizew=191)
(1)求证:四边形
是矩形.
(2)直接写出四边形
的面积是______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32436704a722d5e568ff5c175bf3c662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ad98ad714864041a632ca949308e417.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7bd0846e377e291fc3483792e2d599a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://img.xkw.com/dksih/QBM/2020/12/3/2606160790380544/2631165743357952/STEM/8b61846ae769419597185b64a27a1eb7.png?resizew=191)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd4b93d7abcfc4c3df48f03aa969c17f.png)
(2)直接写出四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ff27eea7545bb06f9472f91290c54e.png)
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