已知,点
是
内一点,
于点
,
于点
,
于点
,且
,若
,
C等于( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034425077b05a897039fe93a231f0e9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4349207577312a34be8428d01e28d051.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11155c8e4ccdd58c999e3967de16dbeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bdd3531dcfcbfadc922759403bee86b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beddd26d48bf8188142bf73e697f9862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85857e2234e9ef3904f4ffe0980055e8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2023-01-29 13:31:20
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【推荐1】如图,在四边形ABCD中,对角线AC平分∠DAB,∠ABD=52°,∠ABC=116°,∠ACB=α°,则∠BDC的度数为( )
![](https://img.xkw.com/dksih/QBM/2018/4/30/1935472136953856/1936833909866496/STEM/b649de2f-9a12-4e21-b5e0-65b0e62f363e.png?resizew=158)
![](https://img.xkw.com/dksih/QBM/2018/4/30/1935472136953856/1936833909866496/STEM/b649de2f-9a12-4e21-b5e0-65b0e62f363e.png?resizew=158)
A.α | B.![]() | C.90﹣α | D.90﹣![]() |
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【推荐2】如图,⊙O在△ABC三边上截得的弦长相等,即DE=FG=MN,∠A=50°,则∠BOC=( )
![](https://img.xkw.com/dksih/QBM/2022/4/17/2966970636017664/2991867517501440/STEM/66d9e316-ee93-4b2e-8fdd-cd7e78995542.png?resizew=136)
![](https://img.xkw.com/dksih/QBM/2022/4/17/2966970636017664/2991867517501440/STEM/66d9e316-ee93-4b2e-8fdd-cd7e78995542.png?resizew=136)
A.100° | B.110° | C.115° | D.120° |
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【推荐1】在
中,
,两个完全一样的三角尺按如图所示摆放,他们一组较短的直角边分别在
上,另一组较长的对应边的顶点重合于点
交
于点
,则下列结论不正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374fe9986ebbc986fc422e514ab93a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea0dec4be4330110e2b7553626a88eef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/26/43b6c3e2-1479-4d61-9a9a-922ae8bda760.png?resizew=139)
A.![]() ![]() | B.![]() | C.![]() ![]() | D.![]() |
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【推荐2】在△ABC中,AB=AC,∠A=36°,AB的中垂线DE交AC于点D,交AB于点E,连接BD,下列论述错误的是( )
A.BD平分∠ABC | B.△BDC的周长等于AB+BC |
C.AD=BD=BC | D.D是AC的中点 |
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