Answer: C.
![\overline{SU}\cong\overline{JL}](https://img.qammunity.org/2020/formulas/mathematics/high-school/30bsjxijfy9eo2eguhpsbqaotnpsp4355v.png)
Explanation:
- SAS congruence postulate tells that if two sides and the included angle of a triangle are congruent to corresponding two sides and the included angle of other triangle, then the triangles are congruent.
In the given picture , we have two triangles ΔSTU and Δ JKL , in which we have
![\overline{ST}\cong\overline{JK}](https://img.qammunity.org/2020/formulas/mathematics/high-school/5so3w8ao6ybk8gfr3lh2h7ckgmuemzwcnx.png)
![\angle{S}\cong\angle{J}](https://img.qammunity.org/2020/formulas/mathematics/high-school/dzhpuxezrhw7tz3glzqzrsuog5njhonmm6.png)
To prove ΔSTU is congruent to Δ JKL, we need
such that
becomes congruent the included angles between pair of congruent sides.
Hence, C is the right option.