Let's copy the diagram and mark the angles we are asked to compare.
We can see that two sides of △ RST are congruent to two sides of △ JKL. However, the third side of △ RST is longer than the third side of △ JKL.
RS&≅JK
ST&≅KL
TR&> LJ
According to the Converse of the Hinge Theorem, the included angle measure in △ RST is greater than the included angle measure in △ JKL.
m∠ RST> m∠ JKL
