👤

Sagot :

BE/ED=BC/EF
3/2=4,5/EF
EF=2*4,5/3=3
Df/DC =de/dB =fe/cb
3/DC = 2/5= fe/4,5

DC= 3x5/4,5 = 3,333
Fe= 4,5x2/5= 1,8

© 2024 IDNLearn. All rights reserved.