早教吧 育儿知识 作业答案 考试题库 百科 知识分享

已知:如图,AB:AC=AD:AE,且∠BAD=∠CAE,试说明∠ACB=∠AED.

题目详情
已知:如图,AB:AC=AD:AE,且∠BAD=∠CAE,试说明∠ACB=∠AED.
▼优质解答
答案和解析
∵∠BAD=∠CAE,
∴∠BAD+∠DAC=∠CAE+∠DAC,
即:∠BAC=∠DAE,
∵AB:AC=AD:AE,
即:AB:AD=AC:AE,
∴△ABC∽△ADE,
∴∠ACB=∠AED.