Answer:
Option (a) and (d) are correct.
Step-by-step explanation:
Given : A line segment AC with B a point on it and DB making an another line segment.
We have to name the type of angle shown.
Straight angle : is an angle made by a straight line. Measure of straight angle is 180°
Right angle: is the angle whose measure is 90°
Complementary angles: are two angles whose sum is 90°
Supplementary angles: are two angles whose sum is 180°
Here, ABC forms a straight angle.
and ∠ABD + ∠DBC = 180°
Thus, ∠ABD and ∠DBC forms a pair of supplementary angles.
Option (a) and (d) are correct.
