楼主你好
(1)证明:如图,连接AD
∵AB=AC,BD=CD,
∴AD⊥BC.又∵∠ABC=45°,∴BD=AB•cos∠ABC,即AB=2√BD∵∠BAE=∠BDM,∠ABE=∠DBM,∴△ABE∽△DBM∴AE/DM=AB/DB=√2 ∴AE=√2MD
满意请点击屏幕下方“选为满意回答”,谢谢.
楼主你好
(1)证明:如图,连接AD
∵AB=AC,BD=CD,
∴AD⊥BC.又∵∠ABC=45°,∴BD=AB•cos∠ABC,即AB=2√BD∵∠BAE=∠BDM,∠ABE=∠DBM,∴△ABE∽△DBM∴AE/DM=AB/DB=√2 ∴AE=√2MD
满意请点击屏幕下方“选为满意回答”,谢谢.