## Elementary Geometry for College Students (5th Edition)

Use method SAS for the following pairs: 1) $\angle VRS\cong\angle TSR$ 2) $\overline{RV}\cong\overline{TS}$ 3) $\overline{RS}\cong\overline{SR}$
It is already given that 1) $\angle VRS\cong\angle TSR$ 2) $\overline{RV}\cong\overline{TS}$ Furthermore, $\overline{RS}\cong\overline{SR}$ So, we have 2 lines and the included angle of $\triangle VRS$ are congruent with 2 corresponding lines and the included angle of $\triangle TSR$. Therefore, according to method SAS, $\triangle VRS\cong\triangle TSR$