Question 25
In the given figure ∠AOC and ∠BOC form a pair of
(a) vertically opposite angles
(b) complementary angles
(c) alternate interior angles
(d) supplementary angles
Since ∠AOC and ∠BOC are on the same line AOB and forming a linear pair
∴∠AOC+∠BOC=180∘
Hence, ∠AOC and ∠BOC are supplementary angles.