Tinh gti
Bai 6: Cho hành kinh hnh ABCD Gei IK far liờt la bung dm
cua CDva AB. Pièng chcc BD cát CK vo CA lan lite 18 MEGO
as minh ti giac AKCI la kint fink hendh
cerer A = (a-by + (b-cjecu5 + Ca-c)eo16
ching
b, Ching mich ka chm K, C, I thing Acng
Chang mirk
AI= 8 KM.
EI
BD