如图是由边长为1的正方形构成的网格,每一个小正方形的顶点叫做格点,线段AB的端点在格点上,仅用无刻度直尺(也不能使用直角)在给定的网格中画图,画图过程用虚线表示,画图结果用实线表示,按步骤完成下列问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/27/5b4fc7e5-d274-46da-aeeb-ef3c006d1150.png?resizew=259)
(1)将线段AB绕A点逆时针旋转90°得到线段AC,连接BC;
(2)直接写出线段AB旋转到AC时扫过图形的面积为______.(结果保留
)
(3)在BC上取一点D,使得
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/27/5b4fc7e5-d274-46da-aeeb-ef3c006d1150.png?resizew=259)
(1)将线段AB绕A点逆时针旋转90°得到线段AC,连接BC;
(2)直接写出线段AB旋转到AC时扫过图形的面积为______.(结果保留
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
(3)在BC上取一点D,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/756d2c4025ea432fcc652545a360c856.png)
更新时间:2022-05-06 22:13:55
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解答题-作图题
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【推荐1】图①、图②都是4×4的正方形网格,每个小正方形的顶点称为格点,点A、B均在格点上,仅用无刻度的直尺在下列网格中按要求作图.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/44397544-cb63-4cbe-a59f-f4935fcbc071.png?resizew=298)
(1)在图①中,画出一个以AB为边的四边形ABCD,使其是中心对称图形不是轴对称图形且边长均为无理数.
(2)在图②中,画出一个以线段AB为边的四边形ABMN,使其既是轴对称图形又是中心对称图形.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/44397544-cb63-4cbe-a59f-f4935fcbc071.png?resizew=298)
(1)在图①中,画出一个以AB为边的四边形ABCD,使其是中心对称图形不是轴对称图形且边长均为无理数.
(2)在图②中,画出一个以线段AB为边的四边形ABMN,使其既是轴对称图形又是中心对称图形.
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【推荐2】如图,在边长均为1的正方形网格中,AB是半圆形的直径.
(1)仅用无刻度的直尺,将图①的半圆形分成三个全等的扇形;
(2)在图②中,用直尺和圆规,以点O为圆心作一个与半圆形不全等的扇形,使得扇形的面积等于半圆形的面积,并写出作法.
(1)仅用无刻度的直尺,将图①的半圆形分成三个全等的扇形;
(2)在图②中,用直尺和圆规,以点O为圆心作一个与半圆形不全等的扇形,使得扇形的面积等于半圆形的面积,并写出作法.
![](https://img.xkw.com/dksih/QBM/2018/12/26/2105297039720448/2109537488650240/STEM/d184189fe474423682a3fddbb724a036.png?resizew=245)
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【推荐1】如图,在▱ABCD中,点E在边AD上,连接EB并延长至F,使BF=BE;连接EC并延长至G,使CG=CE,连接FG,点H为FG的中点,连接DH,AF.
(1)若∠BAE=70°,∠DCE=20°,求∠DEC的度数;
(2)求证:四边形AFHD为平行四边形.
(1)若∠BAE=70°,∠DCE=20°,求∠DEC的度数;
(2)求证:四边形AFHD为平行四边形.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/19/e4d21891-a42d-4c4f-b27b-383e4354e642.png?resizew=201)
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【推荐2】在菱形
中,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/28/c037be4a-d622-4e97-890b-5d1833c321a6.png?resizew=317)
(1)如图1,点
为线段
的中点,连接
,
,若
,求线段
的长;
(2)如图2,点
为线段
上一点(
不与
,
重合),以
为边,构造如图所示的等边三角形
,线段
与
交于点
,连接
,
.点
为线段
的中点,连接
,
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/28/c037be4a-d622-4e97-890b-5d1833c321a6.png?resizew=317)
(1)如图1,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
(2)如图2,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1885efcff0b903e314057dd153578600.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dafebaaf13781120dc57c277d0267c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dafebaaf13781120dc57c277d0267c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2dca049735b45fb9b2533c68605eddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/482c8170034be9cd39824c25866437b0.png)
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【推荐1】如图,在
中,
,
,
,点
在边
上,且
点
从点
出发,沿
方向匀速运动到终点
,在
、
上的速度分别是每秒
个单位长度和每秒
个单位长度
当点
不与
的顶点重合时,连结
,作点
关于直线
的对称点
,连结
、
.设点
的运动时间为
秒.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/1/0cecff70-27fe-457e-80d5-78f71f9c74e5.png?resizew=182)
(1)
______ .
(2)用含
的代数式表示
的长.
(3)当点
、
、
共线时,求四边形
的面积.
(4)当
与
的直角边垂直时,直接写出t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241465bb8b380fc37d46763241c92e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d48c90f4a0a139f6f58ad06f79c42911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27ea680b12a5495fc2acbb98b6e13b8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50690dab38f4512eb72e18b7f86cf6f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7096fdcee49451970e84214dee5c2e5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/288abe01824f42cfe725509af5aec4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/1/0cecff70-27fe-457e-80d5-78f71f9c74e5.png?resizew=182)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
(2)用含
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
(3)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c098054bf29acb0004f818552a725514.png)
(4)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/900b844294e8c07ea9a858adb845121c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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解答题-作图题
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【推荐2】如图1,在平面直角坐标系中,已知点
的坐标为
,点
的坐标为
,且
满足
,过点
作
轴于点
,连接
.
的面积;
(2)如图1,点
为线段
上的一点,连接
,且
,求点
的坐标;
(3)如图2,已知射线
是第一象限的角平分线,点
为射线
上的一点,点
为平面上的一点,且四边形
为菱形.
①在图2中,请借助直尺和圆规作出菱形
;
②求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14433f067eaba0ac8c038338972e6e88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b548c901c3fb2437d766e07917be4ad9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663a61ad241d5d874c9a9362f0ee917c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/099cfeb3e9061e974dfa730b01a9e171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5862fb8bb359e111a5896f1389ac1126.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/078049676f9c8de9a49b84737b32bd4c.png)
(2)如图1,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fb7c9b5376c6d491e743b710bc25701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81ba4b398b5ea2cc6ce53976faa06122.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(3)如图2,已知射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9be2071f41901e0c3634eb5e7f2cdda.png)
①在图2中,请借助直尺和圆规作出菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5ec3f44cd7f4689920e5df628177737.png)
②求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
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解答题-作图题
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适中
(0.65)
【推荐1】如图,
在平面直角坐标系中,在正方形网格中,每个小正方形的边长为 1 个单位长度
(1)画出将
向下平移 4 个单位长度后得到的
;
(2)画出将
绕点 C 逆时针方向旋转
得到的
;
(3)在(2)的条件下,求线段
旋转到
扫过的面积(结果保留
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
(1)画出将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c3135fa20c32d04a270750f77c1f2d.png)
(2)画出将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c3135fa20c32d04a270750f77c1f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0468237bbc0d3df77435d98b817c10c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/403590d719951bd6133479f4e52041bc.png)
(3)在(2)的条件下,求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d77f02e8eb6827be9c42cdd153ccddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/22/47a4e738-48a3-4b2d-828d-21b80124cfce.png?resizew=302)
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解答题-作图题
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【推荐2】如图,在平面直角坐标系内,
的三个顶点坐标分别为A(2,-4),
(4,-4),
(1,-1).
![](https://img.xkw.com/dksih/QBM/2018/1/19/1863705054765056/1865423944327168/STEM/9bf572ed-3677-478d-861b-a55b8833a545.png?resizew=278)
(1)画出
关于
轴对称的
,直接写出点
的坐标;
(2)画出
绕点
逆时针旋转90°后的
;
(3)在(2)的条件下,求线段
扫过的面积(结果保留π).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c65edad25ddd666cdce0d7e5afefc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/2018/1/19/1863705054765056/1865423944327168/STEM/9bf572ed-3677-478d-861b-a55b8833a545.png?resizew=278)
(1)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c65edad25ddd666cdce0d7e5afefc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24414f4f8d6af6e0aa1425b634473d2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
(2)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c65edad25ddd666cdce0d7e5afefc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7899544785499bef1ca1d576a515ab53.png)
(3)在(2)的条件下,求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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