作图题
(1)已知如图,平面上四点A、B、C、D,
①画直线AD ;
②画射线BC,与AD相交于O ;
③连接AC、BD相交于点F .
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/17/da5753aa-fc59-46d0-8e4f-a377bcd5023e.png?resizew=106)
(2)如图,已知线段a,b,用尺规作一条线段,使它等于2a-b .(不要求写作法,保留作图痕迹)
(1)已知如图,平面上四点A、B、C、D,
①画直线AD ;
②画射线BC,与AD相交于O ;
③连接AC、BD相交于点F .
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/17/da5753aa-fc59-46d0-8e4f-a377bcd5023e.png?resizew=106)
(2)如图,已知线段a,b,用尺规作一条线段,使它等于2a-b .(不要求写作法,保留作图痕迹)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/17/c6b22e8c-d37b-4c54-8b38-b2e5d5143d77.png?resizew=83)
更新时间:2020-07-28 19:55:33
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解答题-作图题
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【推荐1】尺规作图:如图,在线段
上求作线段
,使
.(不写作法,保留作图痕迹)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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解答题-问答题
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【推荐2】已知:点
在
的平分线
上.求作:菱形
,使
为菱形的一个内角,且点
为它的对称中心.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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解答题-作图题
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【推荐1】如图,已知点
,
,
在直线
外,按下列要求作图(保留作图痕迹):
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/28/bd5e6fed-9ea1-4e60-a1b7-82192f8853ea.png?resizew=233)
(1)作直线
,射线
.
(2)在直线
上确定一点
,使得
最小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/28/bd5e6fed-9ea1-4e60-a1b7-82192f8853ea.png?resizew=233)
(1)作直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481b196bed2a1500dee6722f1525b158.png)
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解答题-作图题
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【推荐2】已知:如图,平面上有A,B,C,D,F五个点.根据下列语句画出图形:
(1)直线BC与射线AD相交于点M;
(2)连接AB,并延长线段AB至点E,使BE=AB;
(3)在直线BC上求作一点P,使点P到A,F两点的距离之和最小.
(1)直线BC与射线AD相交于点M;
(2)连接AB,并延长线段AB至点E,使BE=AB;
(3)在直线BC上求作一点P,使点P到A,F两点的距离之和最小.
![](https://img.xkw.com/dksih/QBM/2020/3/29/2429818193870848/2432261903278080/STEM/3efa23d3fc3b427cb230d7e91408c6b8.png?resizew=92)
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