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∠1=∠2 ∠B=∠C ∠D=∠E ∠BAE=∠CAD
∠B=∠C ∠D=∠E ∠1=∠2 ∠CAD=∠DAC
∠1=∠2 ∠B=∠C ∠D=∠E ∠BAE=∠CAD
△ABD≌△BCD △ABD≌△ACD △ACD≌△BCD △ACE≌△BDE
△ABD≌△BCD △ABD≌△ACD △ACD≌△BCD △ACE≌△BDE
AB=DE ∠ACE=∠DFB BF=EC ∠ABC=∠DEF
BD=CE ∠1=∠2 ∠BAD=∠CAE ∠D=∠E
∠B=∠C ∠D=∠E ∠1=∠2 ∠CAD=∠DAC
∠1=∠2 ∠B=∠C ∠D=∠E ∠BAE=∠CAD
BD=CE ∠1=∠2 ∠BAD=∠CAE ∠D=∠E
∠BAD=∠CAD AB=AC BD=CD ∠B.=∠C.
∠B=∠C ∠D=∠E ∠BAC=∠DAE ∠CAD=∠DAE