Question 173263
triangle WHY is congruent to triangle TOC
For 2 triangles to bee congruent, each of the three pairs of sides and each of the 3 paris of angles must be congruent. Since WHY is congruent to TOC, then you know WH = TO.

Moving to the next line,
triangle TOC is congruent to triangle PAL
Using the same logic as above, you can say that TO = PA

You also know that if A =B and B=C, then A=C. So, since WH=TO and TO=PA, then you can conclude that WH=PA

Not sure how 4 justifications is needed here. Seems to me like 3 will suffice.