因為線段AB=線段AC 則ㄥBAD=30度 所以ㄥDAC=30度 線段AD=線段AE 則ㄥADE=三角形內角和-ㄥDAC除2 （等腰兩底相同） =75 故90-75=15
Answers
Were you able to resolve your confusion?
Users viewing this question
are also looking at these questions 😉
因為線段AB=線段AC 則ㄥBAD=30度 所以ㄥDAC=30度 線段AD=線段AE 則ㄥADE=三角形內角和-ㄥDAC除2 （等腰兩底相同） =75 故90-75=15
Users viewing this question
are also looking at these questions 😉
