If the sum of the measures of two angles is 90°, then the angles are complementary. In triangle ABC, m∠ B= 65°, m∠ C= 90° Which valid conclusion follows directly from the previous statements? If the sum of the measures of two angles is 90°, then the angles are complementary. In triangle ABC, m∠ B= 65°, m∠ C= 90° Which valid conclusion follows directly from the previous statements? advertisement