题目内容
(1)∠1=∠4 (2)∠BFC=2∠1+∠A
(3)∠A+∠EFD=180°
(4)∠1+∠2+∠3+∠4=180°
A.(1)(3) B.(2)
C.(1)(4) D.没有
∠CAD=_______,∠DAE=_______.