如图,已知
,
.依据尺规作图的痕迹可求出
的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/31/1c0f85a2-28f2-4ca4-a323-6f2a37ef2def.png?resizew=182)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3181e58f09e9fec4e43e422b82831b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/31/1c0f85a2-28f2-4ca4-a323-6f2a37ef2def.png?resizew=182)
A.2 | B.3 | C.![]() | D.6 |
更新时间:2021-04-16 17:21:08
|
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【推荐1】如图,在
中,
,
, 以
为圆心,任意长为半径画弧分别交
、
于点
、
,再分别以
、
为圆心,大于![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
的长为半径画弧,两弧交于点
,连接
并延长交
于点
,则下列说法
①
是
的平分线
②
③点
在
的垂直平分线上
④
其中正确的个数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/28/4af16bad-3899-495e-967b-62f6ac39ff22.png?resizew=184)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80b4c9fab3f6dc6f613f1d4d8a1bfc9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df46ad76c129a1eccdea3553e0b7423.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b4e1b8436cf2a739c7ba5d3c68165d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
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A.4 | B.3 | C.2 | D.1 |
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【推荐2】如图,在
中,
,以顶点A为圆心,适当长为半径画弧,分别交
,
于点M,N,再分别以点M,N为圆心,大于
的长为半径画弧,两弧交于点P,作射线
交边
于点D,点E在
上.若
,
,
,当
最小时,
的面积是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
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A.2 | B.1 | C.6 | D.7 |
您最近一年使用:0次
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【推荐1】如图,在Rt△ABC中,∠C=90°,∠A=30°,BD是∠ABC的平分线,AD=20,则BC的长是 ( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/6/cf4f854c-f3c7-42cf-83a6-eee9d64b94c0.png?resizew=156)
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A.20 | B.20![]() | C.30 | D.10 ![]() |
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【推荐2】如图,正方形ABCO和正方形DBFO的顶点A,E,O在同一直线l上,且EF=
,AB=6,给出下列结论:①AE=10;②∠COD=45°;③△COF的面积S△COF=6;④CF=BD=
,其中正确的是( ).
![](https://img.xkw.com/dksih/QBM/2022/4/18/2960910652686336/2962462238613504/STEM/d851d130-b804-4f39-804e-b86be78cae5c.png?resizew=239)
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A.①②③ | B.②③④ | C.①②④ | D.①②③④ |
您最近一年使用:0次