网址:http://m.1010jiajiao.com/timu_id_4455641[举报]
如图,等腰梯形ABCD中,AD∥BC,AE∥DC,∠AEB =60°,AB = AD = 2cm,则梯形ABCD的周长为 ( )
A.6cm B.8cm C.10cm D.12cm
如图,等腰梯形ABCD中,AD∥BC,AE∥DC,∠B=60º,BC=3,△ABE的周长为6,
则等腰梯形的周长是 ……………………………………………………( )
A .8 B .10 C.12 D.16