Maths problem: how to do a, and b(1), thanks?
回答 (1)
2020-03-01 6:41 pm
✔ 最佳答案
(a) BE=DE (given)
BC=DC (given)
CE=CE (common side)
∴ △BEC≡△DEC (SSS)
=> ∠BEC=∠DEC
(b)(i)
∠BEA=∠DEA → from the result of (a)
BE=DE (given)
EA=EA (common side)
∴ △ABE=△ADE (SAS)
收錄日期: 2021-04-24 07:58:16
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https://hk.answers.yahoo.com/question/index?qid=20200301082834AADUzMq