如图,已知等腰梯形ABCD中,AD∥BC,∠A=1100,则∠C =(   )
A.90°B.80°C.70°D.60°
C
∵AD∥BC,∠A=1100∴∠B=70°∵等腰梯形ABCD∴∠C =∠B=70°.故选C.
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