如图,
的三个顶点的坐标分别为点
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/25/dc1cf98d-99f5-45e4-9098-322a6f6173ab.png?resizew=200)
(1)请在图中画出
关于
轴对称的
(点
的对应点分别为
,
,
),并写出点
的坐标.
(2)
的面积是________.
(3)连接
,
,请写出
,
,
之间的数量关系,并给予证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6acf45a5f66394502b70bf1dd68ee40b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96e30645f36e8628b9e25d53598d5174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/938b014c59237432cd33c6088b01df4b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/25/dc1cf98d-99f5-45e4-9098-322a6f6173ab.png?resizew=200)
(1)请在图中画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce7af7c5df749c6fa9bbe87faa72c66d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6024fd4532f5f981deac4582c799a6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ecac2dad4cffdd971fd23deacff3fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e2fd86095efb13355c589072f43d2fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aad692b616948273d0de8e7bc428909.png)
更新时间:2024-01-25 16:20:18
|
相似题推荐
解答题-问答题
|
较易
(0.85)
【推荐1】如图,AB
CF,E为DF的中点,AB=20,CF=15,求BD的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/352af0c5-f531-408f-a903-772ab4dd8d08.png?resizew=233)
您最近一年使用:0次
解答题-证明题
|
较易
(0.85)
【推荐2】(1)阅读材料并填空:运用平行线及其性质,可以推理证明出很多有用的结论,如图8甲,点
是
中
边延长线上的一点,过点
作
则有如下推理证明:
![](https://img.xkw.com/dksih/QBM/2020/8/18/2530619491188736/2531075826892800/STEM/59c69907-a2bf-492b-bc37-ee4d6adc3fbc.png)
(已知),
(两直线平行, )
(两直线平行, )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3461ec649863af7e0af6ccc3238669fb.png)
(等量代换).
(2)如图乙,根据
中的平行线的构造方法,过点
作
交
于点
运用
中的结论,即可推理出四边形
中
的度数.具体推理步骤如下,请填空:
![](https://img.xkw.com/dksih/QBM/2020/8/18/2530619491188736/2531075826892800/STEM/c8e81fb7-57b5-4160-ae71-2f67d71a92cc.png)
由
知:
_ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e06443f6b0409f4d361359dc582c076.png)
(两直线平行, ),
(两直线平行,同旁内角互补).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6d27b40dbfb00339e82a93c421e3ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acd1ad86abd787b44da7aebaa52e9f27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ef0e25a1221c1483a5d0b6c440ec4e.png)
(等量代换)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c27f9a98fe0adea5852b885abe3c7556.png)
![](https://img.xkw.com/dksih/QBM/2020/8/18/2530619491188736/2531075826892800/STEM/59c69907-a2bf-492b-bc37-ee4d6adc3fbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c8e835a9ca42f5b6e2654b5a10ca3ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efd20564a3838a90023eca91ea1715ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8418bdd158ba514f21b9c8d1c70afd07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3461ec649863af7e0af6ccc3238669fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a06c181c83917ea1692d70631b34c50e.png)
(2)如图乙,根据
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebe7eaf967808dad0a184eeedfa27721.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e4ca8b58be33aa0b01f29308367f84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59d5d4f3c923002b7cd0238642eb9123.png)
![](https://img.xkw.com/dksih/QBM/2020/8/18/2530619491188736/2531075826892800/STEM/c8e81fb7-57b5-4160-ae71-2f67d71a92cc.png)
由
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7159b4c254e1e7a4994f29bf0c81e0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e06443f6b0409f4d361359dc582c076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b9c6599f7c0c7b600dc7db756e840e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0701f68765e77d7ade03745b6567d3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6d27b40dbfb00339e82a93c421e3ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acd1ad86abd787b44da7aebaa52e9f27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ef0e25a1221c1483a5d0b6c440ec4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7081ac76e5ac1e22e848eec143578f1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2a02295b56d4f94521133b91e1403e4.png)
您最近一年使用:0次
解答题-作图题
|
较易
(0.85)
【推荐3】课上教师呈现一个问题:
![](https://img.xkw.com/dksih/QBM/2022/7/11/3020329994240000/3067218381176832/STEM/5065f35f14f04e41b1144a499abcf1f3.png?resizew=153)
小凯画出了图
,图
,分析思路及结论如下:
![](https://img.xkw.com/dksih/QBM/2022/7/11/3020329994240000/3067218381176832/STEM/ef01dea96324482494315a60fc906273.png?resizew=166)
小明认为小凯只考虑了点
在直线
,
之间的情况,点
的位置应该还有其他情况.
根据以上材料,解答问题:
画出一种点
不在直线
,
之间的图形,写出探究
,
,
之间的数量关系的分析思路及结论.
如图,![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
![](https://img.xkw.com/dksih/QBM/2022/7/11/3020329994240000/3067218381176832/STEM/5065f35f14f04e41b1144a499abcf1f3.png?resizew=153)
小凯画出了图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://img.xkw.com/dksih/QBM/2022/7/11/3020329994240000/3067218381176832/STEM/ef01dea96324482494315a60fc906273.png?resizew=166)
分析思路: 要寻求三个角之间的数量关系,根据图中角的位置特征,可以借助平行线进行角的位置的转换. 如图 ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() 得到结论: ![]() 如图 ![]() ![]() ![]() 得到结论: ![]() |
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
根据以上材料,解答问题:
画出一种点
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb3de20ba8bda63c650ef571be155702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cfc2771aa0d5b97d2297f8a26a6f6b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7d19f963f7c803bcfcbb265ec6d4304.png)
您最近一年使用:0次
解答题-作图题
|
较易
(0.85)
【推荐1】如图,在边长为1的小正方形组成的
网格中,给出了格点
(格点为网格线的交点).
![](https://img.xkw.com/dksih/QBM/2021/4/8/2695536965353472/2699393277673472/STEM/f3c63476-d5aa-4a97-bbda-6eca0b99ae80.png)
(1)画出
关于直线l对称的
;
(2)画出将
绕
点逆时针旋转一定的角度得到的
,且点
和点
均为格点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23f3b42cd6069f0e461035e76459ee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/2021/4/8/2695536965353472/2699393277673472/STEM/f3c63476-d5aa-4a97-bbda-6eca0b99ae80.png)
(1)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
(2)画出将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b99ac6020279dc6290e15be4627b149.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94132e99a6f7294668549b3c3d7a26c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c578d3a17de6f47abaaeca5ab778e7f.png)
您最近一年使用:0次
解答题-作图题
|
较易
(0.85)
【推荐2】图1、图2、图3均是5×5的正方形网格,每个小正方形边长为1,点A、B均为格点(即网格线的交点)只用直尺,分别按照下列要求画图.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/21/140ba68c-0b40-4d58-a0ac-73712cee6003.png?resizew=473)
(1)在图1中,画一个
,使它的面积为3,且点C在格点上;
(2)在图2中,画
,使得
,且点D在格点上;
(3)在图3中,画一个锐角
,使它是轴对称图形,且点E在格点上,并画出它的对称轴(画一条即可).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/21/140ba68c-0b40-4d58-a0ac-73712cee6003.png?resizew=473)
(1)在图1中,画一个
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)在图2中,画
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/868ff1350bd72625328c85c3097cd85e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6b0c6766bd801fa114221d0ab0bfa61.png)
(3)在图3中,画一个锐角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐1】已知点
和
.试根据下列条件求出a,b的值.
(1)A,B两点关于y轴对称;
(2)A,B两点关于x轴对称;
(3)AB∥x轴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7224a221c211c56f9335e29ca6a2f7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0fb0f4b16f49d7d7fe963330c783280.png)
(1)A,B两点关于y轴对称;
(2)A,B两点关于x轴对称;
(3)AB∥x轴
您最近一年使用:0次
解答题-作图题
|
较易
(0.85)
【推荐2】(1)在平面直角坐标系中,顺次连接下列各点,并画出图形.(-5,2),(-1,4),(-5,6),(-3,4),(-5,2)
(2)不改变这些点的纵坐标,将它们的横坐标都乘以
.写出新的点的坐标;
(3)在同一坐标系中,描出这些新点,并顺次连接起来;
(4)新图形与原图形有什么关系?
(2)不改变这些点的纵坐标,将它们的横坐标都乘以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
(3)在同一坐标系中,描出这些新点,并顺次连接起来;
(4)新图形与原图形有什么关系?
![](https://img.xkw.com/dksih/QBM/2021/12/15/2872983725506560/2875465603497984/STEM/6f776b65-887a-4ccc-9cc0-95248d8fb34d.png?resizew=231)
您最近一年使用:0次