Given:
The figure shows two parallel lines intersected by a transversal line.
To find:
The relationship between angles 1 and 7.
Step-by-step explanation:
Angles 1 and 7 are in alternate positions and also in the exterior portion of the parallel lines.
So, angles 1 and 7 are alternate exterior angles.
Final answer:
The correct option is c.
Alternate exterior angles.