如图,四边形ABCD为平行四边形,∠BAD的角平分线AE交CD于点F,交BC的延长线于点E.
(1)求证: BE = CD ;
(2)连接BF,若 BF ⊥ AE , ∠ BEA = 60 ° , AB = 4 求平行四边形ABCD的面积.
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