Cho tam giac ABC có diện tích 600

- Hướng dẫn giải

S(BDM) = S(CDM) => S(ABM) = S(ACM) S(AEM) = 1/2 S(CEM) => S(ABM) = 1/2 S(BCM) mà S(BDM) = S( CDM) => S(ABM) = S(BDM) = S( CDM) = S(ACM) = 600 : 4 = 150 $c{m}^2$ => S(AEM) = 150 : (1+2) = 50 $c{m}^2$