Question

Help the answers are CPCTC Definition of congruence SAS and SSS

Answer 1

From the question given the following statements to prove are correct, then the last part

`\Delta RSU\cong\Delta TSV`

The reason is Side-side-side triangle theorem

This theorem states that all three sides of a triangle are congruent (identical) to the corresponding sides of another triangle, then the triangles themselves are also congruent.

Hence the answer is Side-side-side triangle theorem