Question

Hz_lion

求計算過程謝謝

5. 如右圖,△ABC中,AD =2 BD, AF交 CD 於E點,
DE = CE BF: CF
,
=
(F) 2-2
7
El+
B

Answer 1

✨ 最佳解答 ✨

Ny-Ålesund

DG 平行 AF

CF : FG = CE : DE = 1 : 1

BG : FG = BD : AD = 1 : 2 = 0.5 : 1

BF = BG + FG = 0.5 + 1 = 1.5

BF : CF = 1.5 : 1 = 3 : 2

Hz_lion

感激不盡:D