Maths problem: how to do, thanks?
回答 (1)
2020-09-22 12:05 pm
✔ 最佳答案
x = AEDC 弧之圓周角y = ABCD 弧之圓周角
x + y = 全圓之圓周角 + CD 弧之圓周角
= 180° + (90°/2)
= 225°
收錄日期: 2021-04-24 08:00:12
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20200922022501AAbNj4s