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已知,如图,∠1=∠2=∠3=55°,则∠4的度数等于
A.115°
B.120°
C.125°
D.135°
已知,如下图,∠1 =∠2 =∠3 = 55°,则∠4的度数等于( ).
A.115° B.120° C.125° D.135°
已知:如图,AB∥CD,CE平分∠ACD,∠A=110°,则∠ECD的度数等于
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