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ustify the last two steps of the proof.
Given: RS is congruent to UT and RT is congruent to US
Prove: triangle RST is congruent to triangle UTS
Proof:
1. RS is congruent to UT 1. Given
2. RT is congruent to US 2. Given
3. ST is congruent to TS 3. _______________
4. triangle RST is congruent to triangle UTS
4. ______________