f3 maths

👨🏻‍🏫 學術台數學

2007-11-20 12:58 am

ABCD and EFCG are 2 identicle rectangle , please find out
1.angle ACF
2.ANGLE CAF

更新1:

這不是 mc 來的 .....

更新2:

i know the aswner is 90 degree and 45 degree

回答 (4)

用戶143743

2007-11-20 1:54 am

✔ 最佳答案

both 75 degrees. IF AND ONLY IF triangle ACF it's isosceles triangle.

rectangle ABCD and EFCG is NOT truely identical, it is similar only by ratio. Do you mean and point between F and G? that is ADG(point between F and G) is identical to CEFG?

Is there anymore information?? because I really cannot validly prove my answer is 75 degree.

I found it very interesting, thanks.

參考: me

👍 0 👎 0

用戶21330

2007-11-20 2:10 am

題目係咪齊嫁??
FCA不可能60度
FAC都不可能60度
因為不是等邊3角

我會努力為你解答!
因為MATHS是我最喜愛的科目

參考: 自己

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用戶11503

2007-11-20 2:05 am

ACF= 90 (angle BCD=90, angle GCB=90 BCD+GCB=180 then you divide it)
CAF=45~

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chy_hsd

2007-11-20 1:19 am

呢條係咪multiple choice？係我教你一個絕招，劃一個o岩比例o既出o黎度

👍 0 👎 0

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