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∠1=∠A ∠1=∠4 ∠A=∠3 ∠A+∠2=180°
∠1=∠A ∠1=∠4 ∠A=∠3 ∠A+∠2=180°
∠2+∠A=180° ∠A=∠3 ∠1=∠4 ∠1=∠A
AB=DE,∠A.=∠D.,AC=DF ∠B.=∠E.,AB=DE,AC=DE ∠A.=∠ ,AB=DE,∠B.=∠ED.AB=DE,BC=EF,AC=DF
∠1=∠2 ∠ABD=∠BDC ∠3=∠4 ∠BAD+∠ABC=180°
∠A+∠2=180° ∠A=∠3 ∠1=∠4 ∠1=∠A
∠B+∠2=180° ∠B=∠3 ∠1=∠4 ∠1=∠B
∠M=∠N. AM=CN AB=CD AM∥CN
AB=DE,AC=DF AC=EF,BC=DF AB=DE,BC=EF ∠C=∠F,BC=EF
)BD︰AB = CE︰AC; ( )DE︰BC = AB︰AD; ( )AB︰AC = AD︰AE; ( )AD︰DB = AE︰EC.
∠A.+∠2=180° ∠A.=∠3 ∠1=∠4 ∠1=∠A.
则从下列条件中补充一个条件后,仍不能判定△ABC≌△CDA的是( ) A.BC=AD ∠B.=∠D.=90° ∠ACB=∠CAD ∠BAC=∠DCA
AB=DE,∠A.=∠D.,BC=EF AB=EF,∠A.=∠D.,AC=DF AB=BC,∠B.=∠E.,DE=EF BC=EF,∠C.=∠F.,AC=DF
∠1=∠3 ∠2=∠3 ∠1=∠4 ∠3=∠4
AB=DE, ∠B=∠E, ∠C=∠F AC=DF, BC=DE, ∠C=∠D AB=EF, ∠A=∠E, ∠B=∠F ∠A=∠F, ∠B=∠E, AC=DE
∠1=∠2 ∠ABD=∠BDC ∠3=∠4 ∠BAD+∠ABC=180°
∠A.+∠2=180° ∠A.=∠3 ∠1=∠4 ∠1=∠A.
AB=DC,∠B=∠C AB=DC,AB∥CD AB=DC,BE=CF AB=DF,BE=CF