write a two column proof.

Question

Given: RS=~ TS, V is the midpoint of RT
Prove: /\RSV=~ /\TSV

/\ is the triangle sign
=~ is the congruent sign

Answer 1

you're given that RS≅TS

SV equals itself (reflection)

RV equals TV (definition of midpoint)

the triangles are ≅ by SSS

Answer 2

Actually, you have to use the midpoint theorem, not the definition of midpoint because you're talking about congruence statements, not equality.