Answer:
Step-by-step explanation:
Congruent triangles:
8) AC = DC Given
BC = EC Given
∠ACB ≅ ∠DCB Vertically opposite angles are congruent
ΔACB ≅ ΔDCB SAS congruent
9) RS = TS Given
SU =SU Reflexive property
∠RSU = ∠TSU Given
ΔRSU ≅ ΔTSU SAS congruent
