Explanation:
when the triangles are written, the names are written as corresponding sides or angles. like in the case of the give triangles, PQR and GHJ, QR will be congruent to HJ. so you need to follow the same pattern used in the parent triangle to find the corresponding ones in the triangle that's congruent to the parent.
in triangle PQR and GHJ:
a. QR congruent to HJ
b. GJ congruent to PR
c. angle R congruent to angle J
d. angle G congruent to angle P