Answer:
The pairs of supplementary angles are
∠4 and ∠3 , ∠3 and ∠6 , ∠4 and ∠5 .
Step-by-step explanation:
Definition of supplementary angles
When sum of two angles are 180° they are called supplementary angles .
As figure given in the question
∠3 = 90°
Thus
∠3 + ∠6 = 180 °
(By using Linear pair property)
∠4 + ∠5 = 180 °
(By using Linear pair property)
∠3 + ∠4 = 180 °
(By using Linear pair property)
Therefore the pairs of supplementary angles are
∠4 and ∠3 , ∠3 and ∠6 , ∠4 and ∠5 .