题型:解答题-作图题
难度:0.85
引用次数:16
题号:22761677
如图,在正方形网格中,将三角形
先向右平移5个单位长度,再向下平移4个单位长度,得到三角形
,点A,B,C的对应点分别为点D,E,F.
.
(2)若将三角形
放在适当的平面直角坐标系中,点B的坐标为
,点C的坐标为
,请直接写出点D,E,F的坐标.
(3)连接
,请直接写出
,
和
之间的数量关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
(2)若将三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ddd46c180401ad4e86b9ef4d5883721.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bc387da3c10d0ffde2a41a935cc1331.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ec07ca71c03f8c1d6d3a1e2efcdff02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6beda2518cf76da94d7ec9a813dcfa82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e35cfb01d9e4729e9b41eb33feb5b8c6.png)
23-24七年级下·山西运城·期中 查看更多[1]
(已下线)山西省运城市盐湖区2023-2024学年七年级下学期期中数学试题
更新时间:2024-05-10 22:42:07
|
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解答题-作图题
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(0.85)
【推荐1】在平面直角坐标系中, △ABC三个顶点的位置如图(每个小正方形的边长均为1).
![](https://img.xkw.com/dksih/QBM/2022/5/6/2973606829326336/2974232439349248/STEM/4837f6ec-0084-4dd9-a809-c93d1aa91c3f.png?resizew=280)
(1)请画出△ABC沿x轴向右平移3个单位长度,再沿y轴向上平移2个单位长度后的△A′B′C′
(2)直接写出A′、B′、C′三点的坐标:A′(___________); B′(___________);C′(___________).
(3)求△ABC的面积.
![](https://img.xkw.com/dksih/QBM/2022/5/6/2973606829326336/2974232439349248/STEM/4837f6ec-0084-4dd9-a809-c93d1aa91c3f.png?resizew=280)
(1)请画出△ABC沿x轴向右平移3个单位长度,再沿y轴向上平移2个单位长度后的△A′B′C′
(2)直接写出A′、B′、C′三点的坐标:A′(___________); B′(___________);C′(___________).
(3)求△ABC的面积.
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解答题-作图题
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较易
(0.85)
【推荐2】如图,在平面直角坐标系中,
的顶点坐标分别为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/22/f2989757-a8e8-4710-a331-ff4a17bf25ee.png?resizew=222)
(1)直接写出点B关于原点对称的点
的坐标:_______;
(2)直接写出
的面积:
________;
(3)平移
,使平移后点A的对应点
的坐标为
,请画出平移后的
;
(4)画出
绕原点О逆时针旋转90°后得到的
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f3747d7af554a62f19d48e9c1ea0496.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/22/f2989757-a8e8-4710-a331-ff4a17bf25ee.png?resizew=222)
(1)直接写出点B关于原点对称的点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5326817f9af012432a202749d1df59f.png)
(2)直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42acd3ee01d9f843a8579ffb0b7d9d82.png)
(3)平移
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad20e2bc6576fc461419f8f138d26e7.png)
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(4)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828dc8dc7259c510b6d63abf40f60e90.png)
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解答题-证明题
|
较易
(0.85)
【推荐1】如图,
平分
,
,
,试说明![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
.请完善解答过程,并在括号内填写相应的理论依据.
平分
,
(①_______________),
(已知),
(等量代换),
②______________(内错角相等,两直线平行),
(③______________),
(已知),
④______________(同角的补角相等)
∴
(同位角相等,两直线平行).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e0f86566770c9a240ebef8bd232cc9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc3845d73e9272f20b877167895e197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4745d21979bb1e2a5c14e7eee49cc75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f85f511236e5645290b9d06984558ea0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9285a3eb1fb2e412994a7786d81bfbb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24592bfd5ab683f124ce1b3849659812.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c7ef14c813ef7a9b00a1565ad10f7a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07c23304075897b011fa4f81f3b68e0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cad97dd9d9593fa01342550aba6ec47.png)
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解答题-证明题
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较易
(0.85)
名校
【推荐2】如图,已知
于点F,
,
与
互余.求证:
.
(已知)
∴
(____________)
∴
(____________)
∵
与
互余(已知)
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d337410cd9456b76bbf022dcae6147d9.png)
∴
(____________)
∵
(____________)
∴
(____________)
∴
(____________)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc90fee532e50d319081d571410421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e14b880800a5fa3de4943a65fbb1953.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc90fee532e50d319081d571410421.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb29e564dc7c2521c53c48476cd315.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e43724e211344fed172ba099a9703912.png)
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/721c75fcd58d3d54260aad0f82e09e37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d337410cd9456b76bbf022dcae6147d9.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e899dd4b5dca896b58d35c5191778c32.png)
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e14b880800a5fa3de4943a65fbb1953.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5d22f0a749adf43f1b5f90174a6f290.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e53497af8899cb299d762f1a4f46a55.png)
您最近一年使用:0次
解答题-作图题
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较易
(0.85)
【推荐1】如图,在
的正方形网格中,每个小正方形的边长均为1个单位长度.
的顶点都在格点上,平移后得到
,点C的对应点是格点
.
![](https://img.xkw.com/dksih/QBM/2022/8/20/3048494098022400/3049499987042304/STEM/4e0a2b496a564d6899f3dd22e128c8ba.png?resizew=185)
(1)画出
;
(2)连接
、
,则这两条线段之间的关系是______;
(3)利用网格画出
的中线
,并求出
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13a96e9c2e2a15130d1d56a1d0e16b72.png)
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(1)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6024fd4532f5f981deac4582c799a6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ecac2dad4cffdd971fd23deacff3fc.png)
(3)利用网格画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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解答题-作图题
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名校
【推荐2】已知:△ABC在直角坐标平面内,顶点的坐标分别为A(0,3)、B(3,4)、C(2,2)(正方形网格中每个小正方形的边长是一个单位长度).
![](https://img.xkw.com/dksih/QBM/2022/3/28/2945810680733696/2946528365019136/STEM/08a8491b-040b-4f3e-b309-235c6130af09.png?resizew=216)
(1)画出△ABC向下平移3个单位得到的△A1B1C1;
(2)画出△A1B1C1绕点A1逆时针旋转90°得到的△A1B2C2,点C2的坐标为___________;
(3)将(2)中线段A1B1扫过的图形围成一个圆锥的侧面,该圆锥的底面半径为__________.
![](https://img.xkw.com/dksih/QBM/2022/3/28/2945810680733696/2946528365019136/STEM/08a8491b-040b-4f3e-b309-235c6130af09.png?resizew=216)
(1)画出△ABC向下平移3个单位得到的△A1B1C1;
(2)画出△A1B1C1绕点A1逆时针旋转90°得到的△A1B2C2,点C2的坐标为___________;
(3)将(2)中线段A1B1扫过的图形围成一个圆锥的侧面,该圆锥的底面半径为__________.
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解答题-问答题
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较易
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【推荐1】小颖利用平移设计了如图所示的图形.
平移得到
,
的对应角为________,点C的对应点为________,
的对应线段为________;
(2)若
,则
是由
向________平移________
得到的.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff39c7aa648afd1080206c8080ff79e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1319cbb1cb9aea618f41281c4bc48c96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff39c7aa648afd1080206c8080ff79e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15514bc735fe4b744672edefe00009c.png)
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您最近一年使用:0次
解答题-作图题
|
较易
(0.85)
【推荐2】如图:点
,三角形
内任意一点
经过平移后对应点为
,将三角形
作同样的平移得到三角形
,
的坐标,并画出
;
(2)求
的面积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9694524ba5853076cdddd18c77f8950.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba45af555fc9133d6adc0791ec81a36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77dc6fa541a47b1f553f0c512ec0cebf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49fb8e08bdc15768ce0f25661aef3e01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba45af555fc9133d6adc0791ec81a36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/407a19a02ece7a8d64f983d96577c933.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b4a845f3188e9cea4dc395568683fbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d23f8323f9abedea4d734495467b9cb.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d23f8323f9abedea4d734495467b9cb.png)
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