Answer:
Options A and D.
Step-by-step explanation:
Given information: a || b , and c is not parallel to a or b.
If two lines are parallel and a transversal line intersect both lines, then
1. Corresponding angles are equal.
2. Alternate exterior angles are equal.
3. Alternate interior angles are equal.
Using the above definitions, we get
[tex]\angle 4=\angle 8[/tex] (Corresponding angles)
[tex]\angle 2=\angle 7[/tex] (Alternate exterior angles)
Since line c is not parallel to a or b.
[tex]\angle 7=\angle 10[/tex]
[tex]\angle 8=\angle 9[/tex]
Hence, the correct options are A and D.