《数学北师大版七年级下册全等三角形的专题复习》由会员分享,可在线阅读,更多相关《数学北师大版七年级下册全等三角形的专题复习(23页珍藏版)》请在金锄头文库上搜索。
1、,75 , , ,C,A,B, ABC DEF,A=D, B=E,.,E,D,F,1,SSS,SAS, ,ASA,AAS, ,1,2, ,2,1ABCDEFC=DB=E A.AB=ED B.AB=FD C.AC=FD D.A=F,A,D,C,B,A,D,C,B,D,B,C,A,O,1. AD=ACADBACB_.,DAB=CAB SAS,BD=BC SSS,D=C=90HL,1,B,C,D,A,3AD=AEAB=AC 1B=C 2A=50oADC任AEB,1,2.B=EABCAED ,AB=AE,AC=AD, BC=ED,(ASA),(AAS),2,3.AB=AEABCAED_,AC=AD,B
2、=E,ACB=ADE,SAS,ASA,AAS,3,4.BC=EDABCAED_,AAS,B=E ACB=ADE,4,AAS,4.BC=EDABCAED_,AAS,B=E ACB=ADE,4,AAS,SSA, AED AED,1,BECFABDEACDFBECF AD,D,B,A,E,F,C,2,ADBC 1 2 3,2,BA=BDBC=BEABD=CBE AC=DE,3,RtABCPBCPABACEFEFEPFPPEF,3,4 ,4,AOBOOAOBCDCD PAP ASAS BASA CAAS DSSS,4,1 2 3,SSS,SAS,ASA,AAS,SAS,ASA,AAS,SAS,AAS,ASA,SSS,HL,