138 + 31 = 169 <span>The angles are complementary. sum = 90 </span><span>The angles are supplementary. sum =180 </span> so answer: The angles are neither complementary nor supplementary.
The answer is the angles are neither complementary nor supplementary, because complementary is to add up to 90° and supplementary is to add up to 180°, and these angles add up to 169°. I hope this helps!