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,1.,2.?, , , ,岻 ,C,B,E,A,D,ABCA/B/C/A/B/=AB A/ =A B/ =B ()A/B/C/ABC,1,2 A/B/DA/ B/ =A EB/A/ =B A/ DB/EC/,1A/B/AB,A,B,C,E,D,(ASA,DABEACBECD OAB = ACB = C. BD = CE,ACDABE,A = A ,AC = AB,C = B, ABEACDASA,AD = AE,AB = AC,DBOECB,OD = OE OB = OC,BD = CE,OB = OC,(2),(1),(2),ABCDEFA=DB=E BC=EFABCDEF,2,(AAS,2.1=2C=D AC=AD,ABDABC 1=2 D=C AB=AB ABDABC AAS AC=AD ,1. AOC BOD A=B C=D ADCBOD ,AOCBOD,2. A=B CA=DB ADCBOD ,AOCBOD,ABBCADDC 1=2 ABAD,2.AB ABBF CDBC=CDBF DEA CE DEAB,1. ,2.,3. , ,
