Final answer:
To prove that line MN is parallel to line PR, we can use the given information about the angles MPQ, 1, and 3.
Step-by-step explanation:
To prove that line MN is parallel to line PR, we need to use the given information that MPQ angle 1 = angle 3 and line PR bisects angle QPN.
Here's the proof:
1. MPQ angle 1 = angle 3 (given)
2. Angle PRN = angle 1 (angle bisector)
3. Angle PRN = angle 3 (substitution from step 1)
4. Therefore, line MN is parallel to line PR (corresponding angles are congruent).