**Question 1** (3 分)如图，直线a，b被c所截，则∠1与∠2是(▲) **Diagram Description:** The image shows a geometric diagram with three lines labeled 'a', 'b', and 'c'. Line 'a' and line 'b' are two distinct lines. Line 'c' is a transversal line that intersects both line 'a' and line 'b'. Angle 1 (∠1) is formed by the intersection of line 'a' and line 'c'. It is located in the interior region between line 'a' and line 'b', and on the left side of the transversal line 'c'. Angle 2 (∠2) is formed by the intersection of line 'b' and line 'c'. It is located in the interior region between line 'a' and line 'b', and on the right side of the transversal line 'c'. **Options:** A. 同位角 B. 内错角 C. 同旁内角 D. 对顶角