Question

如图所示，∠1和∠5是直线________、________被直线________所截而成的________角；∠2和∠3是直线________、________被直线________所截而成的________角；∠6和∠9是直线________、________被直线________所截而成的________角；∠ABC与∠DCB是直线________、________被直线________所截而成的________角．

Answer 1

答案：
解析：

DC　AB　DB　内错　AC　DB　AD　同旁内　AC　BC　BD　同位　DC　AB　BC　同旁内