Question

君

國三1-2比例線段，求解！！

) 5. 如右圖,已知 AD || EF ||
GHI BC,ŁDF=20FH
=50 CH=30 AB=80,
EAE+EG-GB= ?
9
9
A D
E
G
B
(16)
F
50
30
C

Answer 1

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Sam Liao

DF:FH:HC = 2:5:3
so, AE:EG:GB = 2:5:3
Set AE=2x, EG=5x, GB=3x. we can get 2x+5x+3x = 80.
x=8

君

謝謝，我了解了！