平行
∵∠A = ∠C = 90°,四边形内角和=360°
∴∠ABC + ∠ADC = 180°
∵BE平分∠ABC,DF平分∠ADC
∴2∠ABE+2∠FDE = 180°
∴∠ABE+∠FDE = 90°
∵∠A =90°
∴∠ADF+∠AFD =90°
∵FD平分∠ADC
∴∠ADF = ∠FDE
∴∠AFD = ∠ABE
∴FD//BE
平行
∵∠A = ∠C = 90°,四边形内角和=360°
∴∠ABC + ∠ADC = 180°
∵BE平分∠ABC,DF平分∠ADC
∴2∠ABE+2∠FDE = 180°
∴∠ABE+∠FDE = 90°
∵∠A =90°
∴∠ADF+∠AFD =90°
∵FD平分∠ADC
∴∠ADF = ∠FDE
∴∠AFD = ∠ABE
∴FD//BE