如图,AE//BD,

如图,AE//BD, 如图,AE、BD是三角形ABC的高,AE、BD交于点C,且AE=BE,BD平分∠ABM 如图,AE,BD是△ABM的高,AE,BD交于点C,且AE=BE,BD平分∠ABM.求证：ED平分∠BDM 如图,AE,BD是△ABM的高,AE,BD交于点C,且AE=BE,BD平分∠ABM.求证：ED平分∠BDM 如图ab:bd=ae:ce,求证ab:ac=ad:ae 如图13,△ABC,△DEC是等边三角形,连接AE.求证:BD=AE 已知：如图,平行四边形ABCD中,AE⊥BD于E,CF⊥BD于F.求证：AE=CF. 如图,已知:AF//BC,AE平分∠GAF,BD平分∠ABC.试说明AE//BD的理由 如图,平行四边形ABCD中,AE⊥BD,CF⊥BD,求证：AECF是平行四边形. 如图,四边形ABCD中,AD=BC,AE垂直于BD,CF垂直于BD 如图,△ABC中,∠ACB=Rt∠,AC=BC,AE平分∠CAB,BD⊥AE于D,求证AE=2BD 如图：三角形ABC中,角ACB是直角,AC＝BC,AE平分角CAB,BD垂直AE于D,求证AE=2BD 如图,AB=AC,∠BAC=90°,BD⊥AE于D,CE⊥AE于E,且BD>CE.求证:BD=EC+ED. 如图,在平行四边形ABCD中,BD是对角线,其中AE⊥BD于点E,CF⊥BD于点F,求证：AE=CF? 如图,AB=AC,∠BAC=90°,BD⊥AE于D,CE⊥AE于E,且BD>CE.求证:BD=EC+ED. 已知如图正方形ABCD,AE与BD交于F,FH⊥AE,HG⊥BD,求证：①AF=FH, ②BD=2GF 如图,△AOB中,OA=OB,∠AOB=90°,AE⊥BD,BD=2AE.求证：BD平分∠ABO. 如图,AE、BD是△ABM的高,AE、BD交于点C,且AE=BE,BD平分∠ABM（1）求证：BC=2AD（2）求证：AB=AE+CE