jackiemoreno841 jackiemoreno841 11-01-2021 Mathematics contestada 5. Justify the last two steps of the proof. Given: RS = UT and RT = US Prove: RST = UTS proof | given 1. RS = UT | 1. Given 2. RT = US | 2. Given 3. ST = TS | 3. _____ 4. RST = UTS | 4. _____