不能证明A'D'不平分∠B'A'C∵△ABD平移得到△A'B'D'∴AB//A'B',AC//A'C',BC//B'C'∴∠BAD=∠B'A'D' ∠CAD=∠CA'D'不能证明∠CA'D'=∠D'A'B'=1/2∠B'A'C∴A'D'不平分∠B'A'C
