问题:
如图,已知△ABC的外角∠ABD=140°,则∠A+∠C=
A.40°
B.50°
C.70°
D.140°
如图,已知△ABC的外角∠ABD=140°,则∠A+∠C=
A.40°
B.50°
C.70°
D.140°
A.40°
B.50°
C.70°
D.140°
参考答案: