On parallel lines, there are corresponding angles.
Corresponding angles are angles located on the same side of their lines, and they are equal.
In the following image, we can see in blue two corresponding angles, and also in red another pair of corresponding angles:
The same thing is true for the angles on the left side of the line:
The blue angles are corresponding angles (they are equal):
From our options, the one that is true is:
1 and 5
Answer: 1 and 5 are corresponding angles.