Use distance formula to find length of each side:
RQ = 5.39
RS = 4.47
ST = 3.61
TU = 4.12
UQ = 8.54
Total =26.13
Answer = 26.1 Units
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The geometry term does each statement above represents is Statement 1 is postulate because you have to prove that corresponding angles are congruent.
-t-3 and 3-t are not the same since t-3 would result in a negative answer since both -t and -3 are negative. While in t-3 t is positive and -3 is negative. it is wrong if its left as t-3 since -t-3=3-t is false.