Final answer:
Without further context or information, it is not possible to determine the length of side pr in triangle pqr or the measure of angle j in triangle jkl.
Step-by-step explanation:
The question is asking for the length of side pr in triangle pqr and the measure of angle j in triangle jkl.
Unfortunately, the given information from Figures 5.4, 2.14, and additional problems (43, 45, 47, 71, 73, 75, 77, 79, 81, 83) does not provide any specific triangles or angles that match the given triangles and angles in the question.
Therefore, without further context or information, it is not possible to determine the length of side pr in triangle pqr or the measure of angle j in triangle jkl.