下列尺规作图求作
上点D,使得
的周长等于
正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab15f71acf24a48b4ea4efac5f09b718.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
22-23八年级上·江苏扬州·期中 查看更多[11]
江苏省扬州市邗江区梅岭中学教育集团2022-2023学年八年级上学期期中数学试题江苏省扬州市梅岭中学2022-2023学年八年级上学期期中数学试题湖南省邵阳市绥宁县2022-2023学年八年级上学期期末考试数学试题山东省淄博市沂源县2022-2023学年七年级上学期期末数学试题福建省福州市仓山区金山中学2023-2024学年八年级上学期期中模拟数学试题山东省德州市德城区第五中学2023-2024学年八年级上学期期中数学试题山东省泰安市新泰市2023-2024学年七年级上学期期末数学试题山东省聊城市高唐县第一实验中学2023-2024学年八年级上学期期末数学试题山东省聊城市莘县2023-2024学年八年级上学期期末数学试题山东省泰安市新泰市2023-2024学年七年级上学期期末数学试题内蒙古自治区鄂尔多斯市东胜区实验中学2023-2024学年八年级上学期第一次月考数学试题
更新时间:2022-12-11 16:01:51
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【推荐1】如图,
中,
,由尺规作图得到的射线
与
交于点E,若
,则
的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/1e4fb51b-4757-4816-9c0c-0b56dee5482b.png?resizew=140)
![](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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59f46447be94c8da8b9be631ac343a0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/1e4fb51b-4757-4816-9c0c-0b56dee5482b.png?resizew=140)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,在
中,
,以顶点
为圆心,适当长为半径画弧,分别交
,
于点
,
,再分别以点
,
为圆心,大于
长为半径画弧,两弧交于点
,作射线
交边
于点
,若
,
,则
的面积是( )
![](https://img.xkw.com/dksih/QBM/2020/11/24/2599997022011392/2604062536441856/STEM/1902eb11-be29-411d-b095-37d829b2d428.png?resizew=199)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
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![](https://img.xkw.com/dksih/QBM/2020/11/24/2599997022011392/2604062536441856/STEM/1902eb11-be29-411d-b095-37d829b2d428.png?resizew=199)
A.7 | B.30 | C.14 | D.60 |
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【推荐1】如图,在△ABC中,AC的垂直平分线交BC于点D,交AC于点E,BC=6,AB=5,则△ABD的周长为( )
![](https://img.xkw.com/dksih/QBM/2019/6/12/2224220238921728/2225528255029248/STEM/9d18f0fd7180484382a7d289ab4e6d75.png?resizew=159)
![](https://img.xkw.com/dksih/QBM/2019/6/12/2224220238921728/2225528255029248/STEM/9d18f0fd7180484382a7d289ab4e6d75.png?resizew=159)
A.13cm | B.12cm | C.11cm | D.10cm |
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【推荐2】如图所示,在△ABC中,AB=AC,∠A=36°,AB的垂直平分线DE交AC于D,交AB于E,下列结论中错误的是( )
![](https://img.xkw.com/dksih/QBM/2021/1/16/2637319138811904/2638917900492800/STEM/943f72eb-06b1-4fef-9191-854b40c6174b.png)
![](https://img.xkw.com/dksih/QBM/2021/1/16/2637319138811904/2638917900492800/STEM/943f72eb-06b1-4fef-9191-854b40c6174b.png)
A.BD平分∠ABC | B.△BCD的周长等于AB+BC |
C.AD=BD=BC | D.△BCD的面积等于△BED的面积 |
您最近一年使用:0次
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【推荐1】如图,在
中,
,点D是
边的中点,分别以B、C为圆心,大于
长为半径画弧,两弧在直线
上方的交点为F,直线
交
于点E,连接
,则下面结论:
①
;②
;③
平分
;④
.其中一定正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/29/20dda41d-053c-4cdd-943d-8c895e28a9cd.png?resizew=177)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53c79c4d655d22f6b3e9826adc6df810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb90e9eb76e0696b3ecfaa5de9eda176.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cd1bc0388e7fad3e849ca39c67f5034.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/326a6b980171b22f89721798e76837ed.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/29/20dda41d-053c-4cdd-943d-8c895e28a9cd.png?resizew=177)
A.①②③ | B.①③④ | C.①②④ | D.③④ |
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【推荐2】如图,在
中,分别以点A,B为圆心,大于
长为半径画弧,两弧交于点P,Q,画直线
,分别交
于点D,E,连结
.则下列说法不一定正确的是( )
![](https://img.xkw.com/dksih/QBM/2021/3/5/2671374281736192/2671446411493376/STEM/978e2d78-90e4-440a-9286-7023134e2649.png)
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A.![]() | B.![]() |
C.![]() ![]() | D.线段![]() ![]() |
您最近一年使用:0次