In the photo of New York City's Chrysler Building at the right, TS ≅ ZY, XY ≅ RS, TR ≅ ZX, ∠ X ≅ ∠R , ∠T ≅ ∠ Z, ∠ Y ≅ ∠S , and Δ H G F ≅ ΔL K J .
b. Which side(s) are congruent to LL ? Explain your reasoning.