Cho 

Câu hỏi: Cho ΔABC=ΔDEF. Biết A^+B^=140o, E^=45o. Tính A^C^D^F^

AA^ = D^ = 105°F^ = C^ = 40°

BA^ = D^ = 90°F^ = C^ = 50°

CA^ = D^ = 95°F^ = C^ = 40°

DA^ = D^ = 40°F^ = C^ = 95°