帮我做一下这题,送三采纳,谢谢!http://zhidao.baidu.com/question/587367795.html?quesup2&oldq=1

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帮我做一下这题,送三采纳,谢谢!http://zhidao.baidu.com/question/587367795.html?quesup2&oldq=1

帮我做一下这题,送三采纳,谢谢!http://zhidao.baidu.com/question/587367795.html?quesup2&oldq=1
帮我做一下这题,送三采纳,谢谢!
http://zhidao.baidu.com/question/587367795.html?quesup2&oldq=1

帮我做一下这题,送三采纳,谢谢!http://zhidao.baidu.com/question/587367795.html?quesup2&oldq=1

∵AB=AC、∠ADB=∠AEC=90º、∠A=∠A
∴ΔBAD≌ΔACE
∴AD=AE
又∵AB=AC
∴AB-AE=AC-AD
即BD=CD