如图K-10-14所示AB=CD AE=DF CE=BF 求证 AE平行于DF
如图K-10-14所示AB=CD AE=DF CE=BF 求证 AE平行于DF
如图,AB=CD,AE=DF,CE=BF,求证AE平行DF
如图,AB=CD,AE=DF,CE=BF,求证:AE平行DF
如图,AB=CD,AE⊥BC,DF⊥BC,CE=BF.求证:AE=DF.
如图,已知:点ABCD在同一条直线上,CE平行DF,AE平行BF且AE=BF.求证:AB=CD
如图,已知,AB=CD,AE⊥BC于E点,DF⊥BC于F,AE=DF,求证CE=BF
如图10,若AB=CD,AE=DF,CE=BF,则AB与CD平行吗?为什么?
如图 已知AB=CD,AE=DF,CE=BF.求证:AF=DE
已知:如图,AD=CD CE=BF DF=AE 求证AB‖DC
如图所示,AB=CD,AE=DF,CE=BF,求证 AE‖DF
AB=CD,AE垂直BC,DF垂直BC,CE=BF,求证AE=DF
已知:如图,AB,CD交于O点,CE‖DF,CE=DF,AE∥BF.求证:∠ACE=∠BDF.