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∠2=∠1,∠ =∠D.B.AB=AD,∠3=∠4 ∠2=∠1,∠3=∠4 AB=AD,∠2=∠1
AB=A′B′,BC=B′C′,∠A=∠A′ ∠A=∠A′,∠C=∠C′,AC=B′C′ ∠A=∠A′,∠B=∠B′,∠C=∠C′ AB=A′B′,BC=B′C′,△ABC的周长=△A′B′C′的周长
∠D.=∠C,∠BAD=∠ABC ∠BAD=∠ABC,∠ABD=∠BAC BD=AC,∠BAD=∠ABC AD=BC,BD=AC
∠ACP=∠ ; B.∠APC=∠ACB; = ; =
AB=DE,AC=DF AC=EF,BC=DF AB=DE,BC=EF ∠C=∠F,BC=EF
AC=DF ; AB=DE; ∠A=∠D ; ∠B=∠E;
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
AC=BD ∠CAB=∠DBA ∠C.=∠ D.BC=AD
AB=DE, ∠B=∠E, ∠C=∠F AC=DF, BC=DE, ∠C=∠D AB=EF, ∠A=∠E, ∠B=∠F ∠A=∠F, ∠B=∠E, AC=DE
=∠D.,添加下列条件后,不能判定
△ABC≌△DEF的是 ( ) A.BC=EF ∠B.=∠E ∠C.=∠F AC=DF
AC=DF ; AB=DE; ∠A=∠D ; ∠B=∠E;
△ABC⊂α,△A′ ′ ′⊂β,且△ABC∽△A.′B.′C.′ B.α内有两条直线平行于β C.α内有无数个点到β的距离相等 α中任一条直线与β平行
∠1=∠2 ∠ABD=∠BDC ∠3=∠4 ∠BAD+∠ABC=180°
∠D.=∠C.,∠BAD=∠ABC ∠BAD=∠ABC,∠ABD=∠BAC BD=AC,∠BAD=∠ABC AD=BC,BD=AC
∠D.=∠C.,∠BAD=∠ABC ∠BAD=∠ABC,∠ABD=∠BAC BD=AC,∠BAD=∠ABC AD=BC,BD=AC
∠AED=∠ABC AD・AB=AC・AE AD・AB=DE・AC ∠ADE=∠C
BC=EF AB=DE ∠A.=∠D ∠B.=∠E.
AC=BD ∠CAB=∠DBA ∠C.=∠ D.BC=AD