Final answer:
In a triangle, if two angles are complementary angles, they add up to 90°. Therefore, in triangle PQR, if ∠P and ∠Q are complementary angles, their sum would be 90°. Option 1 is the correct answer.
Step-by-step explanation:
In a triangle, if two angles are complementary angles, they add up to 90°. Therefore, in triangle PQR, if ∠P and ∠Q are complementary angles, their sum would be 90°. So, the statement "In ΔPQR, ∠P and ∠Q are complementary angles" is true. Option 1 is the correct answer.