12. (10 points) Provide a formal two-column proof.
Given: ZTRS and LTVS are right angles.
Prove: RT = VT
Statements
1. ZTRS and LTVS are right angles.
2. ZTRS and LTVS are congruent.
3. RS = VS (Definition of congruent angles)
4. RT = RS (Definition of congruent segments)
5. RT = VS (Substitution, using statements 3 and 4)
6. VT = VS (Definition of congruent segments)
7. RT = VT (Transitive property, using statements 5 and 6)
Reasons
1. Given
2. Definition of congruent angles
3. Definition of congruent angles
4. Definition of congruent segments
5. Substitution
6. Definition of congruent segments
7. Transitive property