AD=AC AD⊥BC AD=AE AB平分∠DAE,请写出图中三处的全等三角形

如图,DE//BC,请问AD:AC=AE:AB?AD:AE=AB:AC? 如图,已知AD//BC,AD=BC,AE⊥AD,AF⊥AB,AE=AD,AB=AF.求证：AC=EF. 如图,AD∥BC,AD=BC,AE⊥AD,AF⊥AB,且AE=AD,AF=AB,求证：AC=EF. 如图,已知：AB=AE,AC=AD,AC⊥AD,AB⊥AE.求证：ED⊥BC. AD=AC AD⊥BC AD=AE AB平分∠DAE,请写出图中三处的全等三角形 梯形ABCD中,AD//BC,AB=CD,AE⊥BC于点E,AE=4AD,AC=BC,求AD/BC的值 已知AE⊥AD,AF⊥AB,AE=AD=BC,AD‖BC,求证:⑴AC=EF⑵AC⊥EF如题 已知AB/AD=AC/AE=BC/DE.试说明AD*CE=BD*AE 如图,已知AE⊥AD,AF⊥AB,AF=AB,AE=AD=BC,AD‖BC,求证AC⊥EF ab⊥ac.ad⊥ae .ab=ac .ad=ae .说明 be⊥cd 如图,AB‖CD,AD‖BC,AE⊥AB,AF⊥AD,AE=AB,AF=AD,试说明AC=EF AE是圆O的直径,AD⊥BC,求证:AD·AE=AB·AC这是图片 如图9,AD//BC,AE⊥AD且AE=AD,AF⊥AB且AF=AB.则AC与EF是否相等?为什么? AB=AC AD⊥BC AE=EC AD=18 BE=15则BC= AB⊥AC,AD⊥AE,AB=AD,BC=DE,求证AM=AN图片图片 梯形ABCD中,AD平行于BC,AB=CD,AE垂直于BC于E,AE=4AD,AC=BC.求AD:BC的值 梯形ABCD中,AD平行于BC,AB=CD,AE垂直于BC于E,AE=4AD,AC=BC. 求AD:BC的值 已知:如图,AD/AB=AE/BC求证：AD/AE=DB/EC和AB/DB=AC/EC