1.如果∠B=∠1,根据_______________________________可得AD//BC2.如果∠1=∠D,根据_______________________________可得AB//CD3.如果∠B+∠BCD=180,根据________________________可得_______________4.如果∠2=∠4,根据________________________________可得____________...
时间:2024-11-16 16:47栏目:幼儿/小学教育