And because e is the midpoint of AB, EF is parallel to BC.

(2) According to the meaning of the question, the area of quadrilateral BDFE is 6. Since S △ Abd: S △ AEF = 4: 1 (the relationship between base and height is double), (S△AEF+6)/S△AEF=4, it can be seen that S△AEF=2 means S△ABD=8.