半径为
的
中,
的圆心角所对的弦长为是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/095ab4a92bf822e175d370e6d0c8a730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c0927afc571a7c966c98192040979e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2023-02-05 14:26:58
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【推荐1】如图,在
中,
,
,以A为圆心,任意长为半径画弧分别交AB、AC于点M和点N,再分别以M、N为圆心,大于MN的长为半径画弧,两弧交于点P,连结AP并延长交BC于点D,则下列说法:①AD是∠BAC的平分线;②
;③点D在AB的中垂线上;④
.其中正确的个数有( )
![](https://img.xkw.com/dksih/QBM/2022/3/2/2927541799559168/2931097605283840/STEM/eea21118-49de-48a2-9860-59f8edde9fdc.png?resizew=236)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d3c9ce32b721995f355eea411340e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42b730d87bb95763a48c69f1b0329ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d70323848a9087f8f2f08ea0a296b34.png)
![](https://img.xkw.com/dksih/QBM/2022/3/2/2927541799559168/2931097605283840/STEM/eea21118-49de-48a2-9860-59f8edde9fdc.png?resizew=236)
A.4个 | B.3个 | C.2个 | D.1个 |
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【推荐2】如图,∠AOB=60°,点P在OA上,PC=PD,若OC=5cm,OD=8cm,则OP的长是( )
![](https://img.xkw.com/dksih/QBM/2021/8/23/2792102782255104/2794068460822528/STEM/de330b9fced54b948249c93db5e83f59.png?resizew=163)
![](https://img.xkw.com/dksih/QBM/2021/8/23/2792102782255104/2794068460822528/STEM/de330b9fced54b948249c93db5e83f59.png?resizew=163)
A.13cm | B.12cm | C.8cm | D.5cm |
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【推荐1】如图,在数轴上点B,点C表示的数分别为4,1, AC⊥BC,AC=1,以
点为圆心,
长为半径画弧,交数轴于点
,则
点表示的数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,在Rt△ABC中,∠B=90°,AB<BC,分别以顶点A、C为圆心,以大于
AC长为半径作弧,两弧交于点M 、N ;作直线MN,交边BC于点D.若BD=6,CD=10,则AB的长为( )
![](https://img.xkw.com/dksih/QBM/2021/5/10/2717918146396160/2721701166702592/STEM/e16f695a-e34d-4dc0-8657-f8514684cab8.png?resizew=169)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/2021/5/10/2717918146396160/2721701166702592/STEM/e16f695a-e34d-4dc0-8657-f8514684cab8.png?resizew=169)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】如图,AB是
的弦,半径
于点D,若
的半径为10cm,
,则OD的长是( ).
![](https://img.xkw.com/dksih/QBM/2021/11/16/2852338539266048/2867976600829952/STEM/01354b8c-ac8d-4dac-be86-a3e92852c7d9.png?resizew=115)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/771b610e4ddefa739a985d1e5462ce5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e04947c608f4b7f67b18e8decb05f70.png)
![](https://img.xkw.com/dksih/QBM/2021/11/16/2852338539266048/2867976600829952/STEM/01354b8c-ac8d-4dac-be86-a3e92852c7d9.png?resizew=115)
A.3cm | B.4cm | C.5cm | D.6cm |
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【推荐2】半径为6的圆中,垂直平分半径的弦长为( )
A.![]() | B.![]() | C.![]() | D.![]() |
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