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1.(1)对应点:A与D,B与E,C与F.对应边:AB与DE,BC与EF,AC与DF对应角:∠BAC与∠FDE,∠ABC与∠DEF,∠ACB与∠DFE.
(2)相等的线段:AB=DE,BC=EF,AC=DF,OD=OAOF=OC,OE=OB;
相等的角:∠BAC=∠FDE,∠ABC=∠DEF,∠ACB=∠DFE,∠AOD=∠COF=∠BOE.
2.画出的三角形如图所示,它们所围成是正方形: