(sr) EXPRESS 顺丰速运 A 作△ACE为边连接DE AE=AC =AB E LEAD=LB=80,AD=BC ∴、AEAD≌AABC B LAED=2o°，ED=AC=AE AB=AC ZA=20 LADE =80* The Opcimism Bias DNED÷EC AD=BC求LADC 、∠EDC=7o LApC=8t7b=lJD° THE COMPLET o
