如图,在
中,
,
的垂直平分线交
于点D、E,则图中等腰三角形的个数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/98d313bc-fef0-452b-be37-d2154b4c6db6.png?resizew=97)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/909f73641cc557af6dd050e5433beb2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5881068127a39caf319492b4177204f0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/98d313bc-fef0-452b-be37-d2154b4c6db6.png?resizew=97)
A.2 | B.3 | C.4 | D.5 |
更新时间:2024-04-07 12:22:04
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【推荐1】如图,四边形ABCD为⊙O的内接四边形.弦AB与DC的延长线相交于点G,AO⊥CD,垂足为E,连接BD,∠GBC=48°,则∠DBC的度数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/6c52e33e-cd01-4d49-b893-4ec6d2ffe2ff.png?resizew=113)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/6c52e33e-cd01-4d49-b893-4ec6d2ffe2ff.png?resizew=113)
A.84° | B.72° | C.66° | D.48° |
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【推荐2】如图,在
中,
,
,点D是
边上一点,
,将
绕点D顺时针旋转
角(
)得到
,当点
落在
的边上时,
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65c5840e0454fdec7d2158072c43b8db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d9142db4dd2ef151bf3d4a63afb61e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50196d293a863fe2f9e46199052ab8c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94d6402e3d060dcdeff009dd8258be92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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A.![]() ![]() | B.![]() ![]() | C.![]() ![]() | D.![]() ![]() |
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【推荐1】如图,△ABC中,AB的垂直平分线分别交AB、BC于点D、E,AC的垂直平分线分别交AC、BC于点F、G,若∠BAC=100°,则∠EAG的度数是( )
![](https://img.xkw.com/dksih/QBM/2021/10/27/2838138499653632/2839220941266944/STEM/54e1f9c8-e671-413f-a57f-478931045fbf.png)
![](https://img.xkw.com/dksih/QBM/2021/10/27/2838138499653632/2839220941266944/STEM/54e1f9c8-e671-413f-a57f-478931045fbf.png)
A.10° | B.20° | C.30° | D.40° |
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【推荐2】如图,
是等边三角形,
是
的平分线
上一点,
于点
,线段
的垂直平分线交
于点
,垂足为
,若
,则
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04fb30a9d07e410ac92c34b8ad0133db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99062329fda496d31916246c0f049efe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
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【推荐1】如图所示,在
中,
,
,
是
的中点,点
分别在边
上,且
,下列结论正确的是( )![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf4c3415df69a347d4a9c9e79995f676.png)
;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11b9c23e783011badd56c0da71ae8225.png)
;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b3be9504b4d7f24528377970a5aa198.png)
;
,
分别表示
和
的面积,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ba04ccb6aa0a15d44e5b32881de6f9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5447a70b9197de4d2814c227a33b42fc.png)
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【推荐2】如图,
为等腰直角
外一点,把
绕点
顺时针旋转90°到
,使点
在
内;已知
,连接
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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【推荐1】一个等腰直角三角尺和一把直尺按如图所示的位置摆放,若
,则∠2的度数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0b65ca62ce90b4879f58884e826c669.png)
A.15° | B.20° | C.25° | D.40° |
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【推荐2】如图,△ABC中,AB=AC,分别在AB,BC的延长线上截取点G,H,使BG=BH,延长AC交GH于点K,且AK=KG,则∠BAC的大小等于( )
![](https://img.xkw.com/dksih/QBM/2018/12/22/2102510381473792/2104150946324480/STEM/164de4cab0c34f938eb9688511101295.png?resizew=121)
![](https://img.xkw.com/dksih/QBM/2018/12/22/2102510381473792/2104150946324480/STEM/164de4cab0c34f938eb9688511101295.png?resizew=121)
A.![]() | B.![]() | C.![]() | D.![]() |
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