.'AB⊥BD,ED⊥BD,AC⊥EC
.'.∠BAC+∠BCA=∠BCA+∠ECD=∠ECD+∠CED=90
.'.∠BAC=∠ECD
∠CED=∠BCA
又'.'AC=EC
.'. .^.ABC=.^.CDE
.'.BD=BC+CD=DE+AB
望采纳,谢谢
.'AB⊥BD,ED⊥BD,AC⊥EC
.'.∠BAC+∠BCA=∠BCA+∠ECD=∠ECD+∠CED=90
.'.∠BAC=∠ECD
∠CED=∠BCA
又'.'AC=EC
.'. .^.ABC=.^.CDE
.'.BD=BC+CD=DE+AB
望采纳,谢谢