已知,如图AB=AC,AD=AE,∠ BAC=∠ DAE=90° ,M是BE中点,求证：AM⊥DC

已知如图,AD/AE=AB/AC,求证角B=角ADE 如图,已知AD/DB=AE/EC,求证 :AD/AB=AE/AC. 已知:如图,AC/AD=AB/DE=BC/AE.求证AB=AE 已知,如图,AD/AC=DE/AB=AE/BC,求证AB=AE 已知,如图,AD:AC=DE:AB=AE:BC 求证：AB=AE 如图,已知：AB=AE,AC=AD,AC⊥AD,AB⊥AE.求证：ED⊥BC. 如图,已知AE=AC,AD=AB,∠EAC=∠DAB,求证:∠D=∠B 如图,已知AB=AD,AC=AE,∠1=∠2,求证∠ADE=∠B 已知:如图∠DAE=∠BAC,AB=AC,∠B=∠C求证:AD=AE 如图,已知AB=AD,AC=AE,∠1=∠2,求证∠ADE=∠B 已知:如图,B、D分别在AC、CE上,AD是∠CAD的平分线,BD‖AE,AB=BC.请证:AC=AE 已知:如图,AB⊥AE,AD⊥AC,∠E=∠B,DE=CB 求证：AD＝AC 已知：如图4—5,AB⊥AE,AD⊥AC,∠E=∠B,DE＝CB.求证：AD=AC 如图,已知,AD=AE,AB=AC.试说明∠ABE=∠ACD 如图,已知AB=AC,AB⊥AC,AD⊥AE且∠ABD=∠ACE,求证AD=AE 已知:如图,AD/AB=AE/BC求证：AD/AE=DB/EC和AB/DB=AC/EC 已知:如图,AD/AB=AE/BC求证：AD/AE=DB/EC和AB/DB=AC/EC 如图,DE//BC,请问AD:AC=AE:AB?AD:AE=AB:AC?