初二数学题,如图AB=AC,AD=AE,AB⊥AC,AD⊥AE.求证∠B=∠C,BD=CE

初二数学题,如图AB=AC,AD=AE,AB⊥AC,AD⊥AE.求证∠B=∠C,BD=CE 初二数学题：已知：如图,AB=AD,AC=AE,∠1=∠2,求证：BC=DE 初二上册数学题三角形全等的判定如图,已经知道AB=AC,AD=AE,∠BAC=∠DAE,求证：BD=CE 如图,DE//BC,请问AD:AC=AE:AB?AD:AE=AB:AC? 问一道初二数学题17如图,AB=AC,AD=AE.BD=CE①若AD⊥ AE,求证BD⊥ CE②若BD⊥ CE,求证∠BAE+∠CAD=180° 求证一道初二关于轴对称的数学题如图,△ABC中,AB=BC=AC,AE=CD,AD、BE相交于P,BQ⊥AD于Q.求证：BP=2PQ. 如图,AB=AD,AC=AE, 如图,AD⊥AE,AB垂直AC,AD=AE,AB=AC,AD⊥AE ,AB=AC,求证：三角形ABD≌三角形ACE 全等三角形证明题(初二上册)如图,已知AD为△ABC中线,AB⊥AE,AB=AE;AC⊥AF,AC=AF,求证：EF=2AD(注:未说AB=AC) 如图,已知AD/DB=AE/EC,求证 :AD/AB=AE/AC. 如图,AB⊥AC,AD⊥AE,AB=AC,AD=AE.求证BE⊥CD 如图,AB⊥AC,AD⊥AE,AB=AC,AD=AE.求证BE⊥CD 如图AB⊥AC,AD⊥AE,AB=AC,AD=AE.求证:△DAC≌三角形EAB 如图,已知：AB=AE,AC=AD,AC⊥AD,AB⊥AE.求证：ED⊥BC. 初二数学题,求助高手：如图,ad,ce是三角形ABC的平分线,角b=60度,求证ae+cd=ac题目如题 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