Explanation:
To prove that the two triangles TUV and WXY are congruent by the Side-Side-Side (SSS) postulate, you need to show that all three pairs of corresponding sides are congruent. That means you need to know the lengths of sides TU, UV, and TV in triangle TUV, and the lengths of sides WX, XY, and WY in triangle WXY. If all three pairs of corresponding sides are congruent, then the triangles are congruent by SSS.