【正确答案】 A、D

【答案解析】Supplementary angles total 180°. ∠1 is adjacent to ∠2 and forms a straight line, so the two angles are supplementary. ∠1≌∠3 because they are corresponding angles. Since ∠6 is adjacent and supplementary to ∠3, it is also supplementary to ∠1. In this case, angles represented by B, C, and E are all congruent to ∠1.