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