Part A:
Aligning the corresponding of each of the triangles we have
∠D corresponds to ∠T (red angle in both triangles)
∠E corresponds to ∠S (blue angle in both triangles)
∠F corresponds to ∠R (black angle in both triangles)
Therefore, the congruence statements are as follows
Part B:
Given the dimensions of both of the triangle we have
ΔDEF:
DE = 16, EF = 18, DF = 10
ΔTSR:
TS = 24, SR = 27, TR = 15
Substitute the following dimensions to the ratios and simplify
Part C:
Since the corresponding angles of ΔDEF, and ΔTSR are congruent, and the ratio of the corresponding sides are all equal, then we can conclude that
ΔDEF and ΔTSR are similar