如图,
是半圆的直径,
是半圆上的两点,
,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c29a7e8eea08197bf53164a560bee58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f78eedb0a19c3a745f4a3a9be42e8a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b28f28ced0531d1df34fcf04c6c67f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2024-06-06 06:09:49
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相似题推荐
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适中
(0.65)
【推荐1】如图,AB是
的直径,C是半圆AB上一点,连AC、OC,AD平分
,交弧BC于D,交OC于E,连OD,CD,下列结论:
①弧
弧CD;②
;③
;④当C是半圆
的中点时,则
.其中正确的结论是( )
![](https://img.xkw.com/dksih/QBM/2019/12/31/2366987385995264/2367071670747136/STEM/077881d1-5235-470f-97d0-d7c818d39e6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
①弧
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c978d92edf0c4c1ef8620c17df75d35e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd67ae02daf003157ed4d2936862618f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bce8e38cc16eb3741b77324cb6afd0d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62d372c99450c4fbbbb0f397e5ecb82c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df34369163e511f14028168cb0b21186.png)
![](https://img.xkw.com/dksih/QBM/2019/12/31/2366987385995264/2367071670747136/STEM/077881d1-5235-470f-97d0-d7c818d39e6f.png)
A.①②③ | B.①②④ | C.①③④ | D.②③④ |
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【推荐2】如图,
是
的直径,将弦
绕点
顺时针旋转30°得到
,此时点
的对应点
落在
上,延长
,交
于点
,若
,则图中阴影部分的而积为( )
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0761165f1176f3a5fe4f7b052832316d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】如图
的弦
,且
于
,连接
,若
,则
的周长为( )
![](https://img.xkw.com/dksih/QBM/2021/4/29/2710383243231232/2714564198694912/STEM/42c1119b-b017-4646-ad56-348f2bbb50c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de966c316db1013defc56372fcf814e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc1f76257275ab4b04f9bc913535670.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/818bc280e55a959e15c1ce487f035ffe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/2021/4/29/2710383243231232/2714564198694912/STEM/42c1119b-b017-4646-ad56-348f2bbb50c1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,在正方形
中,点
,
,
分别是
,
,
上的点,
,
,
,
,则
的长为( )
![](https://img.xkw.com/dksih/QBM/2019/4/24/2189214745575424/2189463658430464/STEM/a62d159c5d85431f9fbda5c7f53c10c8.png?resizew=172)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fbd8e8c759858fb3d3132605d44e865.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f92d396da3c16a2ff791d29151ba0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59e6ef4354cf6337fad1b719ff2bf8b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/083c0c7b50f30d719c62f5c8b4f69dc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2019/4/24/2189214745575424/2189463658430464/STEM/a62d159c5d85431f9fbda5c7f53c10c8.png?resizew=172)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】如图,△ABC内接于⊙O,BD是⊙O的直径.若∠DBC=33°,则∠A等于( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/1/fd6f3dce-1c5b-4103-b376-739178b1f33e.png?resizew=132)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/1/fd6f3dce-1c5b-4103-b376-739178b1f33e.png?resizew=132)
A.33° | B.57° | C.67° | D.66° |
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【推荐2】如图,AB是⊙O的直径,CD是弦,
,则
的度数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/11/09184288-5d93-45b7-8d37-763ad6660c09.png?resizew=163)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c49b0ba9d16d37be55fdafec031ae13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c543c3ddc3723fde6bbfca3ea3b921b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/11/09184288-5d93-45b7-8d37-763ad6660c09.png?resizew=163)
A.50° | B.45° | C.40° | D.35° |
您最近一年使用:0次