如图,已知
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/75bf7c94-5c18-4e14-8dd5-56a6842613fc.png?resizew=106)
(1)按下列要求作图(尺规作图,保留作图痕迹);
①作
的平分线,与AC相交于点D;
②在
边上取一点E,使
;
③连接
并延长与
的延长线相交于点F.
(2)根据所作图形,证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/75bf7c94-5c18-4e14-8dd5-56a6842613fc.png?resizew=106)
(1)按下列要求作图(尺规作图,保留作图痕迹);
①作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
②在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df1ac3ab8d3ce5e61fd2f89761f80976.png)
③连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)根据所作图形,证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1c9ea68cd9659d200587026b9c6ac4c.png)
更新时间:2023-01-05 16:28:11
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相似题推荐
解答题-作图题
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【推荐1】【定义新概念】把一个两组对边分别平行的四边形叫做平行四边形.
【操作与发现】已知
(如图).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/28/62741219-da17-4d49-a821-0ffe834da8aa.png?resizew=217)
(1)尺规作图求作四边形
,且
,
.(保留作图痕迹,不写作法,)
(2)以上所得四边形
是平行四边形,请说明理由.
【探索与延伸】如上图,连结
,记交点为
,观察、分析,在该平行四边形
中,辨析以下结论:
①平行四边形的两组对角分别相等(
,
);
②平行四边形的两条对角线互相平分(
,
);
③平行四边形中连结两条对角线,图中全等的三角形是2对;
④
和
的面积相等;
其中正确的有______(填写序号).
【操作与发现】已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/28/62741219-da17-4d49-a821-0ffe834da8aa.png?resizew=217)
(1)尺规作图求作四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c220eadc312101e2fb89dfe920f7b30d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9f07a876244afec67a0eca4d45c2e6.png)
(2)以上所得四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
【探索与延伸】如上图,连结
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
①平行四边形的两组对角分别相等(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0a38c85a7bbf19a51ae407778787f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d01fc460614df9db458986ae7de8327e.png)
②平行四边形的两条对角线互相平分(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0944865f14b13a772526c4cae4f29c99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b9ea68dbddf33f0fed8f35a1fd5c90b.png)
③平行四边形中连结两条对角线,图中全等的三角形是2对;
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/372629a8666de1e9bac3e7daadcac7b6.png)
其中正确的有______(填写序号).
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解答题-问答题
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【推荐2】读句画图.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/14/f92f219a-aa96-4f43-9850-d6e8f5b52004.png?resizew=111)
(1)画射线
,连接
并延长线段
至
;
(2)用直尺和圆规作
,使得
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/14/f92f219a-aa96-4f43-9850-d6e8f5b52004.png?resizew=111)
(1)画射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)用直尺和圆规作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1384d0a02d097ac7aa8a19e8da6f9767.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ae5609c3ee4ca1ef86f5314945c3ddd.png)
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解答题-证明题
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名校
【推荐1】如图,点P是∠AOB的平分线OC上任意一点,点D、E分别在射线OA、OB上,且OE=OD,求证:∠ODP=∠OEP.
![](https://img.xkw.com/dksih/QBM/2020/12/8/2609892008919040/2613532503842816/STEM/e398b259416546c185a3a3f977b1414c.png?resizew=152)
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解答题-证明题
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【推荐2】如图,已知:点
在同一条直线上,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/17/a094c4f9-0ef4-48bc-b9c1-a9a78a4b989e.png?resizew=207)
(1)求证:
;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26b97c8776e954d061f4d82e421e2126.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5842411ae26130976a297dda8609c38a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/17/a094c4f9-0ef4-48bc-b9c1-a9a78a4b989e.png?resizew=207)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c244edbf77fbb8e9c017515e370c5c8.png)
(2)求证:
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解答题-证明题
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【推荐2】如图,
和
中,
,E是
的中点,且
于点F,且
.
;
(2)若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0005e1ef60f6ddc5f9a83e3de1ef3b2e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a510a3eb906b3ef0760b0d1723d11ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddfbd95d65eb10d5794257589e12e99a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ece63571c71b079e463003f4f7cbf1ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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解答题-作图题
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【推荐1】如图所示,
是等边三角形,D点是AC的中点,延长BC到E,使
.
![](https://img.xkw.com/dksih/QBM/2021/4/2/2691036186517504/2694986059456512/STEM/5b3a1d86-7803-4ac9-a9ce-4b6fa3dc2317.png)
(1)用尺规作图的方法,作
的平分线DM,交BE于点
不写作法,保留作图痕迹
;
(2)填空:
______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b1d267eeb09c171c3e847f0597be31c.png)
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(1)用尺规作图的方法,作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3e081637bcea5368cc72370bae283b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94b554486bc34b098b4b3e878a2c4613.png)
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(2)填空:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce81f1d19c9a5483f77423b3421524b8.png)
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解答题-作图题
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【推荐2】按要求作图.已知∠AOB,点C是OA上一点,
(1)过点C作CD∥OB;
(2)在直线CD上求作一点P,使点P到OA,OB的距离相等.(不写作法,保留作图痕迹).
(1)过点C作CD∥OB;
(2)在直线CD上求作一点P,使点P到OA,OB的距离相等.(不写作法,保留作图痕迹).
![](https://img.xkw.com/dksih/QBM/2019/8/6/2263045367259136/2263758311170048/STEM/9539d6f8c8864e719d6e1b8d92fdbe58.png?resizew=209)
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