6. The sail on Joshua's boat forms a triangle. The side lengths of one sail (triangle XYZ)are 13, 17, and 20. What is the measure of each side of the sail?

Correct option is option D
Explanation:
For any tringle, the longest side is always opposite the biggest angle, also the smallest side is always opposite to the smallest angle
From the question, the biggest angle is 82, YZ facing it must be the biggest side
which is 20.