如图,在四边形
中,
,对角线
与
相交于点E,
,
,
,
,则对角线
与
的长分别是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.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/e72ecef0280d2ea90ceaec75993b84c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c828839ec7daffe75d61c24298afe7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f8939f8c274cb26a8a6a5fa2469087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2a9d7544dc3a884958a893771e104cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/25/6a1cbc91-ada2-45da-806f-47f8550c9176.png?resizew=192)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
更新时间:2023-07-19 10:22:28
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【推荐1】如图,AB是⊙O的弦,OC⊥AB,垂足为C,
,OC=
OD,则∠ABD的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/908a3d7437863ff4d98a60e7b76e9cf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
A.90° | B.95° | C.100° | D.105° |
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【推荐2】如图,在等边三角形
中,
为
边上的高,
是直线
上的一个动点,连接
,将线段
绕点
逆时针旋转
得到线段
,连接
.若
,则在点
的运动过程中,线段
的长的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3533837e3d08c461dea031a44e5424d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3533837e3d08c461dea031a44e5424d.png)
A.2 | B.![]() | C.![]() | D.![]() |
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【推荐1】如图,将
绕点
顺时针方向旋转
得到
,若
,连接
,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d36581140ebac5d28438ea63b1b23b65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2689f0ce5ab3467d8214794d8acb2bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b757706eee506a078fc25e3f33a70cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23dc2d2dd56fcc67698c45a6e0e48f80.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/5/94d5a6bc-06e2-473c-aba6-228b8712f356.png?resizew=204)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】已知:如图,在
,
中,
,
,
,点
,
,
三点在同一条直线上,连接
,
.以下四个结论:①
;②
;③
;④
.其中结论正确的个数有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/13/afd0adc3-d06b-4fe8-9bc1-d7555df86a56.png?resizew=151)
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421291381be28da4bd16560fd383b4a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/509d8dd6031dc0ef92075877e53fe201.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ccad96848478b4e41a302bf411b6095.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/701bdd3741641d9f1109def20c9cab1e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/13/afd0adc3-d06b-4fe8-9bc1-d7555df86a56.png?resizew=151)
A.1 | B.2 | C.3 | D.4 |
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【推荐1】如图,在矩形ABCD中,AB=4,BC=3,点E为AB上一点,连接DE,将△ADE沿DE折叠,点A落在
处,连接
,若F,G分别为
,BC的中点,则FG的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eb97aff0960e2640314888a38e7169c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eb97aff0960e2640314888a38e7169c.png)
A.2 | B.![]() | C.![]() | D.1 |
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【推荐2】如图,已知
的半径为
,
、
是直径
的同侧圆周上的两点,
,
是
的中点,动点
在线段
上,则
的最小值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/6/ada48a88-2806-4e83-b951-4b7593009161.png?resizew=155)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.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/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d9c685d7b863b4085ae64a53409709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fead1d5cbe29ad49ce1e64018553d5f6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/6/ada48a88-2806-4e83-b951-4b7593009161.png?resizew=155)
A.![]() | B.![]() ![]() | C.![]() ![]() | D.![]() ![]() |
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【推荐1】如图.在
中,点D,E分别是边
,
的中点,
与
交于点O,连接
.下列结论错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/2/c9b41336-6926-42ff-9b00-180f1ca9b457.png?resizew=140)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,在△ABC中,AB=AC,∠A=36°,BD平分∠ABC交AC于点D,下列结论正确的有( )
①AD=BD=BC;
②△BCD∽△ABC;
③AD2=AC·DC;
④点D是AC的黄金分割点.
![](https://img.xkw.com/dksih/QBM/2019/3/7/2155391239798784/2156997642010624/STEM/7c5e553a939e411b8c0766e4ae436c44.png?resizew=75)
①AD=BD=BC;
②△BCD∽△ABC;
③AD2=AC·DC;
④点D是AC的黄金分割点.
![](https://img.xkw.com/dksih/QBM/2019/3/7/2155391239798784/2156997642010624/STEM/7c5e553a939e411b8c0766e4ae436c44.png?resizew=75)
A.1个 | B.2个 | C.3个 | D.4个 |
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