摘要:19.等腰梯形ABCD中.AD∥BC.∠B=60°.AD=AB=6cm.则等腰梯形ABCD的周长是 cm.
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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
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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
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