如图，在Rt△ABC中，∠ACB=90°，AB=10，BC=6，CD∥AB，∠ABC的平分线BD交AC于点E，DE=_____.
Boboften____hismotherwiththehouseworkonSundays.
-Whoknowswhatpandasandsheeplikeeating?
-Iknowpandaslikeeating_______andsheeplikeeatinggrass.
---Doyoulikethismovie?
---Yes,Ido!InfactI’veneverseena________onethanthis.
已知三角形的两边长分别为1和4，第三边为整数，则该三角形周长为（）
