![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
[单选题]
在△ABC中,AB=AC,若∠A=40°,则∠C为()
A.40°
B.70°
C.40°或70°
D.100°
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
B、70°
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.40°
B.70°
C.40°或70°
D.100°
B、70°
A.若ABC=E,则A,B,C都可逆
B.若AB=AC,且A可逆,则B=C
C.若AB=AC,且A可逆,则BA=CA
D.若AB=O,且A≠O,则B=O
A.1cm<AB<4cm
B.5cm<AB<10cm
C.4cm<AB<8cm
D.4cm<AB<10cm