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已知△DEF≌△ABC,AB=AC,且△ABC的周长为23cm,BC=4cm,则△DEF的三条边中,其中一条边边长等于多少.
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教案备课库《全等三角形——边角边(一)》真题及答案
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9.5cm
9.5cm或9cm
4cm或9.5cm
9cm
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