Maths: how to do (b), thanks?

2020-07-22 8:07 am

回答 (4)

2020-07-22 12:18 pm
✔ 最佳答案
<ABD=180-48-(180-80)=32


<BAC=180-80=100
<ABC=<ACB
<ABC+<ACB+<BAC=180
2<ACB=180-100=80
<ACB=40

<BDC=180-48=132

<CBD=180-<BDC-<ACB=180-132-40 = 8
2020-07-22 10:23 am
別忘AB=AC(A、B、C=等腰三角形)
2020-07-23 11:47 pm
加油哦
。。。。。。。。。。。
2020-07-22 11:43 am
go to see the doctor ,and take some medicine.


收錄日期: 2021-04-11 23:11:03
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