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2022年人教版八级上《第章轴对称》单元测试含答案解析 .pdf

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1、第 13 章轴对称一、选择题1如图，将 ABC沿直线 DE折叠后，使得点B与点 A重合已知AC=5cm，ADC的周长为17cm，则 BC的长为（）A7cm B10cm C12cm D22cm 2如图，四边形ABCD 中，点 M，N分别在 AB，BC上，将 BMN 沿 MN翻折，得 FMN，若 MF AD，FNDC，则 B=（）A60 B70 C80 D 903如图，ABC中，ACB=90，沿 CD折叠 CBD，使点 B恰好落在AC边上的点 E处若A=22，则 BDC等于（）A44 B60 C67 D 774如图，在RtACB中，ACB=90，A=25，D是 AB上一点将RtABC沿 CD折叠

2、，使B点落在 AC边上的 B处，则 ADB 等于（）A25 B30 C35 D 405如图，菱形纸片ABCD 中，A=60，折叠菱形纸片ABCD，使点 C落在 DP（P为 AB中点）所在的直线上，得到经过点D的折痕 DE 则 DEC的大小为（）A78 B75 C60 D 456如图，在矩形纸片ABCD中，AB=4，AD=3，折叠纸片使DA与对角线 DB重合，点A落在点 A处，折痕为 DE，则 AE 的长是（）A1 BCD2 7附图（）为一张三角形ABC纸片，P点在 BC上今将A折至 P时，出现折线BD，其中 D点在AC上，如图（）所示若 ABC的面积为80，DBC的面积为50，则 BP与 PC

3、的长度比为何？（）A3：2 B5：3 C8：5 D13：8 文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 Z

4、F7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4

5、I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 Z

6、F7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4

7、I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 Z

8、F7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4

9、I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q9文档编码:CL1P4I8J2Q4 HW8H5E9T7J6 ZF7Y6V2N8Q98如图，将长方形纸片ABCD 折叠，使边DC落在对角线AC上，折痕为CE，且 D点落在对角线D处若 AB=3，AD=4，则 ED的长为（）AB3 C1 D9如图，已知正方形ABCD，顶点 A（1，3）、B（1，1）、C（3，1）规定“把正方形ABCD 先沿x 轴翻折，再向左平移1 个单位”为一次变换

10、，如此这样，连续经过2014 次变换后，正方形ABCD的对角线交点M的坐标变为（）A（2012，2）B（2012，2）C（2013，2）D（2013，2）10如图，四边形ABCD 是矩形，AB=6cm，BC=8cm，把矩形沿直线BD折叠，点 C落在点 E处，BE与AD相交于点 F，连接 AE，下列结论：FBD是等腰三角形；四边形ABDE是等腰梯形；图中共有6 对全等三角形；四边形BCDF的周长为cm；AE的长为cm其中结论正确的个数为（）A2 个B3 个C4 个D5 个11如图，正方形ABCD 中，AB=6，点 E在边 CD上，且 CD=3DE 将 ADE沿 AE对折至 AFE，延长EF交边

11、BC于点 G，连接 AG、CF 则下列结论：ABG AFG；BG=CG；AG CF；SEGC=SAFE；AGB+AED=145 文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10

12、G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5

13、K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1

14、文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6

15、R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5

16、N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 H

17、V6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O1

18、0V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1其中正确的个数是（）A2 B3 C4 D5 12如图，在矩形ABCD 中，点 E是 AD的中点，EBC的平分线交CD于点 F，将 DEF沿 EF折叠，点 D恰好落在BE上 M点处，延长BC、EF交于点 N 有下列四个结论：DF=CF；BF EN；BEN是等边三角形；SBEF=3SDEF其中，将正确结论的序号全部选对的是（）ABCD13 如图，直线 y=x+2 与 x 轴、y 轴分别交于A、B两点，把 AOB沿直线 AB翻折后得到 AO B，则点

19、 O 的坐标是（）A（，3）B（，）C（2，2）D（2，4）14如图，在Rt ABC中，C=90，AC=，BC=1，D在 AC上，将 ADB沿直线 BD翻折后，点A落在点 E处，如果AD ED，那么 ABE的面积是（）文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V1

20、0G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY

21、5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W

22、1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H

23、6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q

24、5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4

25、HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O

26、10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1A1 BCD15如图，四边形 ABCD 中，AD BC，B=90，E为 AB上一点，分别以 ED，EC为折痕将两个角（A，B）向内折起，点A，B恰好落在 CD边的点 F处若 AD=3，BC=5，则 EF的值是（）A B 2C D2二、填空题16如图，在三角形纸片ABC中，C=90，AC=6，折叠该纸片，使点C落在 AB边上的 D点处，折痕 BE与 AC交于

27、点 E，若 AD=BD，则折痕 BE的长为17如图，矩形ABCD 中，AB=3，BC=4，点 E是 BC边上一点，连接AE，把 B沿 AE折叠，使点B落在点 B处当 CEB 为直角三角形时，BE的长为18如图，在矩形纸片ABCD中，AB=12，BC=5，点 E在 AB上，将 DAE沿 DE折叠，使点A落在对角线 BD上的点 A处，则AE的长为文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M

28、10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 Z

29、F5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3

30、E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10

31、G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5

32、K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1

33、文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6

34、R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W119如图，在RtABC纸片中，C=90，AC=BC=4，点 P在 AC上运动，将纸片沿PB折叠，得到点C的对应点D（P在 C点时，点C的对应点是本身），则折叠过程对应点D的路径长是20如图，矩形ABCD 中，AB=1，E、F 分别为

35、 AD、CD的中点，沿BE将 ABE折叠，若点A恰好落在BF上，则 AD=21如图，将矩形ABCD 沿 CE向上折叠，使点B落在 AD边上的点F 处若 AE=BE，则长 AD与宽AB的比值是22如图，有一直角三角形纸片ABC，边 BC=6，AB=10，ACB=90，将该直角三角形纸片沿DE折叠，使点A与点 C重合，则四边形DBCE 的周长为文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M1

36、0W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF

37、5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E

38、2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G

39、4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K

40、8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文

41、档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R

42、10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W123如图是长为40cm，宽为 16cm的矩形纸片，M点为一边上的中点，沿过M的直线翻折若中点M所在边的一个顶点不能落在对边上，那么M点在（填“长”或“宽”）上，若M点所在边的一个顶点能落在对边上，那么折痕长度为cm24如图 1，正方形

43、纸片ABCD 的边长为2，翻折 B、D，使两个直角的顶点重合于对角线BD上一点 P，EF、GH分别是折痕（如图2）设 AE=x（0 x2），给出下列判断：当 x=1 时，点 P是正方形ABCD 的中心；当 x=时，EF+GH AC；当 0 x2 时，六边形AEFCHG 面积的最大值是；当 0 x2 时，六边形AEFCHG 周长的值不变其中正确的是（写出所有正确判断的序号）25如图，在矩形ABCD 中，AB=8，BC=10，E是 AB上一点，将矩形ABCD 沿 CE折叠后，点B落在 AD边的 F 点上，则DF的长为26如图，在矩形ABCD 中，AB的长度为a，BC的长度为b，其中bab将此矩形纸

44、片按下列顺序折叠，则CD的长度为（用含 a、b 的代数式表示）文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:

45、CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M1

46、0W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF

47、5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E

48、2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G

49、4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K

50、8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文档编码:CY5K8O10V10G4 HV6R3E2Q5N1 ZF5H6R10M10W1文

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