GF=1725-820-410=495
TFA
ΔCED≈ΔCBA
CE/CB=ED/1080
(410+495)/1725=ED/1080
ED=905*1080:1725≈566,61
TFA
ΔCGF≈ΔCBA
CG/CB=GF/BA
495/1725=GF/1080
GF=495*1080/1725≈309,91
obs
puteaudf fi lasate si ca fractii rationale ireductibile...dar n-am mai simplificat, am facut pe cal;culator