如图，E、F是 ABCD的对角线AC上的两点，AE=CF．
影儿 |
发布日期：2010-04-29 20:27:58
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如图，E、F是平行四边形ABCD的对角线AC上的两点，AE=CF． 求证：（1）△ABE≌△CDF； （2）BE∥DF． |
