2021年平行线判定性质复习导学案.pdf
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1、使用人班级姓名平行线的性质和判定的综合运用导学案【学习目标】1.分清平行线的性质和判定.已知平行用性质,要证平行用判定.2.能够综合运用平行线性质和判定解题.【学习过程】一、学前准备1、回答:平行线的性质有哪些?平行线的判定有哪些?二、平行线的性质与判定的区别与联系1、区别:性质是:根据两条直线平行,去证角的相等或互补判定是:根据两角相等或互补,去证两条直线平行2、联系:它们都是以两条直线被第三条直线所截为前提;它们的条件和结论是互逆的。3、总结:已知平行用性质,要证平行用判定一、预习检测:知识点应用1.如图:若C=,则 DE BC.理由;若2=4,则.理由;若2+=180,则.理由.2.如图
2、:若AB CD,CD EF,则 AB与EF的位置关系是什么?为什么?3ABCDEF124图1ABCDEF1图23ABCDEF124图1精品w o r d 学习资料 可编辑资料-精心整理-欢迎下载-第 1 页,共 4 页ABCDEF二、典例分析:如图,已知:BAP+APD=180,1=2,求证:E=F 三跟踪练习:1、如图,已知:AB DE,B+E=180,求证:BCEF。2、如图,已知:1 2,求证:3 4=180o 3、如图,已知:AB CD,A C,求证:AD BC。4、如图,已知:AD BC,AEF=B,求证:AD EF。你有其他方法证明这个问题吗?你写出过程。ABCDFEABCDABC
3、DMFG12345精品w o r d 学习资料 可编辑资料-精心整理-欢迎下载-第 2 页,共 4 页文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I
4、1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编
5、码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P
6、8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y
7、1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A
8、4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10
9、C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3三、拓展提高:1.如图,DE AB,EFAC,A=35,求 E的度
10、数.2.AECDFB,1=75,2=40,求 3 的度数.3、如图,已知:AB CD,MG 平分 AMN,NH平分 DNM,求证:MGNH。四、课堂小结:本节课你有哪些收获?你还有哪些疑惑?五、自我检测:1、如图 ABEF,1=E,则 CDAB.说理如下:【方法一】1=E,(已 知)CD EF()AB EF,(已 知)CD AB().【方法二】1=E,(已 知)CD EF()AB EF,(已 知)A=E,()CBADGEF1ABCDMFGEHN2精品w o r d 学习资料 可编辑资料-精心整理-欢迎下载-第 3 页,共 4 页文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7
11、O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I
12、1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编码:CH4P8E7Y1Y1 HV4A4F8A10C5 ZL7O10X2I1I3文档编
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