如图,已知
为等腰直角三角形,斜边
上有两点
使得
,现将
绕点A逆时针方向旋转
后得到
,连接
,则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/10/b249ee09-fd6b-4b35-afdf-a671e6976804.png?resizew=181)
①
,②
,③
,④
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a51949f48ee8cf746851ba779b078e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c76805974fefbe166b90d260e822ab5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54fb6e81fee5674c3e26a65e58cc506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39634297f83b4685e2d9b0756407df53.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/10/b249ee09-fd6b-4b35-afdf-a671e6976804.png?resizew=181)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2028bdaee37a5b0e966b88fe0b001a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6ab707a9941d46652ebb50380b1a72c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e944dbd6e2875e2d2f0e4942ba0a3c55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1c3f969a58189967e052d7ae91a355f.png)
A.①② | B.①④ | C.①②④ | D.②③④ |
更新时间:2024-03-10 13:33:02
|
相似题推荐
单选题
|
困难
(0.15)
【推荐1】如图,在正方形
中,
,
,
分别是
,
,
上的点,且
,连接
分别交
,
于点
,
,连接
.下列结论:①
;②
;③
是
的中点;④若
,则
.其中正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d1f0f5621f89269fd3057f663f1eb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc8b62dc033d86ee9e561b8903796701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87448e09eaa816e50ae92d111d5ded6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcc5ba5dc8cdcb6723e00db221ffa02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/605933873cbba4f9d28c2b35100f281c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0884525302a7038ac9f0e742e3fafe24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90f74b0b63c77bfe683ca9cc2cd20daf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/19/99683760-7ec0-44c9-8dc7-7cb2945e6d63.png?resizew=152)
A.1个 | B.2个 | C.3个 | D.4个 |
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真题
【推荐2】如图,E、F、G、H分别是矩形的边AB、BC、CD、AD上的点,AH=CF,AE=CG,∠EHF=60°,∠GHF=45°.若AH=2,AD=5+
.则四边形EFGH的周长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/14/2ad03cb2-5805-4721-97ec-a4366c0e97bf.png?resizew=196)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/14/2ad03cb2-5805-4721-97ec-a4366c0e97bf.png?resizew=196)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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解题方法
【推荐1】如图,
中,
,点D在
内部,且使得
.则
的度数为( )
![](https://img.xkw.com/dksih/QBM/2021/9/22/2813518968913920/2813775692185600/STEM/d18fbec8-a509-48e7-90f0-71c31f006f75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b7715b6e536fa970fb68b40e56f3c6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c2794ac5b0fbae74ce1c30b6734d482.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb8eca20ce2c918ea4034ea15210c7f.png)
![](https://img.xkw.com/dksih/QBM/2021/9/22/2813518968913920/2813775692185600/STEM/d18fbec8-a509-48e7-90f0-71c31f006f75.png)
A.![]() | B.![]() | C.![]() | D.不能确定 |
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【推荐2】如图,在▱ABCD中,∠BAC=90°,∠ABC=60°,E是AD的中点,连结BE交对角线AC于点F,连结DF,则tan∠DFE的值为( )
![](https://img.xkw.com/dksih/QBM/2020/3/23/2425512211652608/2426469497700352/STEM/2c49c0c1860d45b0b4af03120bec2f0d.png?resizew=202)
![](https://img.xkw.com/dksih/QBM/2020/3/23/2425512211652608/2426469497700352/STEM/2c49c0c1860d45b0b4af03120bec2f0d.png?resizew=202)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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【推荐1】如图,△ABC中,∠ABC=45°,∠BCA=75°,BC=6﹣2
,点P是BC上一动点,PD⊥AC于D,PE⊥AB于E,在点P的运动过程中,线段DE的最小值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/2/45006537-3c1d-486e-8417-9b0250d3c611.png?resizew=170)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/2/45006537-3c1d-486e-8417-9b0250d3c611.png?resizew=170)
A.3![]() | B.![]() | C.4![]() | D.2 |
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名校
【推荐2】如图,
内接于半径为
的半圆
中,
为直径,点
是
的中点,连结
交
于点
,
平分
交
于点
,
为
的中点,可得( )
①
②
③
④![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a6a120e3b20e64e20753720f686529a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b91d650c2fc1a741fabdb333b09aeb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b28f28ced0531d1df34fcf04c6c67f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/30/38086aa8-b9c2-446d-aadd-05a9b8ef78f8.png?resizew=212)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1dbe60e674d9555b544232b6f9e7870.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ebed4dde68c0c8a59291f5f308ff1b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c3ec174b1ce835cc8737ff6ce57e52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a6a120e3b20e64e20753720f686529a.png)
A.①②③ | B.①②④ | C.①③④ | D.②③④ |
您最近一年使用:0次
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名校
【推荐1】如图,O是正
内一点,
,
,
,
,将线段BO以点B为旋转中心逆时针旋转60°得到线段
,下列结论:①点O与
的距离为6;②
;③
;④
;⑤点P为
内一点,则点P到
三个顶点的距离和最小为
.其中正确的结论是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/c9f15507-503b-483e-b44e-70278baa7116.png?resizew=168)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98a627db288a044ede594ecc020258d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55e2857963e3ea3578e9a13638c3a2c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26ea9e9e42ced4f9b7540b368fbd171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/886c25cbaff27a9c4cf52dacec0eac4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7fbae4adf65fd0d3e6159f6dde899.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12fe32dfbd66709875c5b9f79c9496da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f94438615778d57a6363a92be3679c05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ec3afeb1a540fdfbbc9efac11c25a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c277a55966304e13b5c977880c9b5956.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e4123975f257306440158659634c4a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/c9f15507-503b-483e-b44e-70278baa7116.png?resizew=168)
A.①②③⑤ | B.①③④ | C.②③④⑤ | D.①②⑤ |
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【推荐2】如图,已知直线
与
轴交于点A,点
与点A关于
轴对称.
是直线上的动点,将
绕点
顺时针旋转
得
.连接
,则线段
的最小值为( ).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/16/e02a9e62-acd3-431c-90a5-ea8a206c216d.png?resizew=154)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c223730ddf909fd1b893f31ac5c63252.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/16/e02a9e62-acd3-431c-90a5-ea8a206c216d.png?resizew=154)
A.3 | B.![]() | C.![]() | D.![]() |
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