To prove that quadrilateral STUV is a parallelogram, one of the definitions of a parallelogram is that opposite sides are congruent. Therefore, the correct response among the provided options must include relationships that demonstrate this.
The best option that confirms the properties of a parallelogram based on congruent sides is:
ST ¯¯¯¯¯¯¯ ≅ UV ¯¯¯¯¯¯¯ and TU ¯¯¯¯¯¯¯ ≅ SV ¯¯¯¯¯¯¯.
This means that:
- Side ST is congruent to side UV, and
- Side TU is congruent to side SV.
This verifies that STUV meets the criteria for being a parallelogram, as it shows that opposite sides are congruent.