已知,在
中,
,
,点B关于直线
的对称点为E,连接
,点C在射线
上,
于N,
于M.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/145bdd8b-f9d8-4470-93e0-8e04853ffb9c.png?resizew=380)
(1)若点C在点E的右边,①依题意,在图1中补全图形;②若
,
,求
的长;
(2)当点C在射线
上运动时,请直接用等式表示出
之间的数量关系(不需要证明).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c505c02c59313fe0108392a5bf5127.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e2eb084fc85f63c963fd0f596f2394b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf958c008f9983aa2d16714a3574c936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49a0fc83871d606f2f9561d2bf6dcd6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d3f843b83e62bab294988a7ea134a63.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/145bdd8b-f9d8-4470-93e0-8e04853ffb9c.png?resizew=380)
(1)若点C在点E的右边,①依题意,在图1中补全图形;②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/514a7c36fbd185f1031268af106fe919.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb909eaf6572dc2a0cac7557cb91d2cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(2)当点C在射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829d2725717fbd595d6ce95a49b30850.png)
22-23八年级上·江苏·阶段练习 查看更多[2]
(已下线)第一次月考押题预测卷(考试范围:第1、2章)-2022-2023学年八年级数学上册重难题型全归纳及技巧提升专项精练(苏科版)江苏省泰州市姜堰区姜堰区张甸初级中学2022-2023学年八年级上学期第一次学情检测数学试题
更新时间:2022-11-25 18:53:25
|
相似题推荐
解答题-问答题
|
较难
(0.4)
名校
【推荐1】如图①,已知线段
,点C为线段AB上的一点,点D,E分别是AC和BC的中点.
![](https://img.xkw.com/dksih/QBM/2021/1/27/2645384531574784/2652052572078080/STEM/d8b01c38-c16a-46ca-a061-673097ceac00.png)
(1)若
,则DE的长为_____________;
(2)若
,求DE的长;
(3)如图②,动点P,Q分别从A,B两点同时出发,相向而行,点P以每秒3个单位长度的速度沿线段AB向右匀速运动,点Q以点P速度的两倍沿线段AB向左匀速运动,设运动时间为t秒,问当t为多少时,P,Q之间的距离为6?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b65065ec3a0cb4b050989165c003d1.png)
![](https://img.xkw.com/dksih/QBM/2021/1/27/2645384531574784/2652052572078080/STEM/d8b01c38-c16a-46ca-a061-673097ceac00.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e0c26071fa1ebab92b8e750fd50d828.png)
(3)如图②,动点P,Q分别从A,B两点同时出发,相向而行,点P以每秒3个单位长度的速度沿线段AB向右匀速运动,点Q以点P速度的两倍沿线段AB向左匀速运动,设运动时间为t秒,问当t为多少时,P,Q之间的距离为6?
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】如图1,点
将线段
分成
和
两部分,若
,则称点
是线段
的圆周率点,线段
、
称作互为圆周率伴侣线段.
如图2,现有一个直径为1个单位长度的圆片,将圆片上的某点与数轴上表示1的点重合,并把圆片沿数轴向右无滑动地滚动1周,该点到达点
的位置.
![](https://img.xkw.com/dksih/QBM/2022/12/11/3128474899742720/3143447104552960/STEM/e70c75297cec4a07a16355f6a134771b.png?resizew=465)
(1)若
,求
的值(用含
的代数式表示);
(2)若点
也是图1中线段
的圆周率点(不同于
点),求
与
的数量关系.
(3)若点
、
均为线段
的圆周率点,求线段
的长度;
(4)在图2中,点
、
分别从点
、
位置同时出发,分别以每秒2个单位长度、每秒1个单位长度的速度向右匀速运动,运动时间为
秒.点
追上点
时,停止运动,当
、
、
三点中某一点为其余两点所构成线段的圆周率点时,请求出
的值.
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c7bbbc433f4dee7d4198efa8ec6729.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
如图2,现有一个直径为1个单位长度的圆片,将圆片上的某点与数轴上表示1的点重合,并把圆片沿数轴向右无滑动地滚动1周,该点到达点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/2022/12/11/3128474899742720/3143447104552960/STEM/e70c75297cec4a07a16355f6a134771b.png?resizew=465)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(4)在图2中,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐1】已知反比例函数
的图象经过点
,且与一次函数
的图象在同一坐标系中.
的图象与一次函数
的图象只有一个公共点时,求n的值;
(2)如图2,当直线
经过点A时,它与反比例函数
的另一个交点记为B,在y轴上找一点M,使
的周长最小,求出M的坐标及
周长的最小值;
(3)如图3,点P是反比例函数图象上A点左侧一点,连接
,把线段
绕点A逆时针旋转
,点P的对应点Q恰好也落在这个反比例函数的图象上,求点P的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/746de43701a269ea4c7ed384ee371116.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab707ee5a7e58275b1b752cbc03f8921.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd5848d7371b15965ab8990329fe04bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/746de43701a269ea4c7ed384ee371116.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd5848d7371b15965ab8990329fe04bd.png)
(2)如图2,当直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd5848d7371b15965ab8990329fe04bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/746de43701a269ea4c7ed384ee371116.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a11cb104b04c4e6a1be700e81da279a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a11cb104b04c4e6a1be700e81da279a.png)
(3)如图3,点P是反比例函数图象上A点左侧一点,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】如图,
是直角坐标系y轴上一点,动点P从原点O出发,沿x轴正半轴运动,速度为每秒1个单位长度,以P为直角顶点在第一象限内作等腰
.设P点的运动时间为t秒.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/5ac61e0b-d003-4df8-99e7-94412b022772.png?resizew=200)
(1)若
轴,求t的值;
(2)设点A关于x轴的对称点为
,连接
,在点P运动的过程中,
的度数是否会发生变化,若不变,请求出
的度数,若改变,请说明理由.
(3)当
时,坐标平面内有一点M,使得以M、P、B为顶点的三角形和
全等(M与A不重合)请直接写出点M的坐标;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c8c39de4d7d1277da346b51b5bd2499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3199c7b43bb8e46d578e6f3c95bb771.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/5ac61e0b-d003-4df8-99e7-94412b022772.png?resizew=200)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcb94c4a46f48f243f98768a5ee34a4.png)
(2)设点A关于x轴的对称点为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e663220a66eff19da6a71e46b397db2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2413a24fe54b67654679152d497d03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2413a24fe54b67654679152d497d03.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66884efff7400f92b530d69d029778d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐1】如图1,已知直线MN
GH,且MN和GH之间的距离为1,小明同学制作了两个直角三角形硬纸板ACB和DEF,其中∠ACB=90°,∠DFE=90°,∠BAC=45°,∠EDF=30°,AC=1.小明利用这两块三角板进行了如下的操作探究:
(1)如图1,点A在MN上,边BC在GH上,边DE在直线AB上.
①将直角三角形DEF沿射线BA的方向平移,当点F在MN上时,如图2,求∠AFE的度数;
②将直角三角形DEF从图2的位置继续沿射线BA的方向平移,当以A、D、F为顶点的三角形是直角三角形时,求∠FAN度数;
(2)将直角三角形ABC如图3放置,若点A在直线MN上,点C在MN和GH之间(不含MN,GH上),边BC和AB与直线GH分别交于D,K.在△ABC绕着点A旋转的过程中,设∠MAK=n°,∠CDK=(4m﹣2n﹣10)°,则m的取值范围为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb31ef428bd9de9bc875b343feded3c7.png)
(1)如图1,点A在MN上,边BC在GH上,边DE在直线AB上.
①将直角三角形DEF沿射线BA的方向平移,当点F在MN上时,如图2,求∠AFE的度数;
②将直角三角形DEF从图2的位置继续沿射线BA的方向平移,当以A、D、F为顶点的三角形是直角三角形时,求∠FAN度数;
(2)将直角三角形ABC如图3放置,若点A在直线MN上,点C在MN和GH之间(不含MN,GH上),边BC和AB与直线GH分别交于D,K.在△ABC绕着点A旋转的过程中,设∠MAK=n°,∠CDK=(4m﹣2n﹣10)°,则m的取值范围为 .
![](https://img.xkw.com/dksih/QBM/2020/7/18/2508738738814976/2509222694461440/STEM/f1804a8516b4495fbead0535dfcbf42b.png?resizew=474)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】
中,
,
在直线
上,
在直线
上,
,设
度,
度.
(1)如图
当
在线段
上,
在线段
上,
,
,则
______,
______.
(2)如图
当
在线段
上,
在线段
上求
和
之间的关系式;
(3)如图
当
在直线
上,
在直线
上,
和
之间的关系式发生改变吗?为什么?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d212c1709b8e72a055cf1b5381ef64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14e8d8bf790aac65f974cabe762ef327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18ef588cef20722e906cfc20bde746a9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/26/66038fab-df25-483e-a27d-8a348c052d84.png?resizew=508)
(1)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1c9ae241fd78126274c65e17990c88.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ecbc3a6fd6ae27c377842f2a6b67540.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070d1ea22a92808dad7489438c239629.png)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c650fe55b7603f106c53ca2423451c6.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(3)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82e415812cca9545611c0faa0c01b1c.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
您最近一年使用:0次