Question

Which angle pairs are supplementary? Check all that apply.
∠1 and ∠2
∠4 and ∠3
∠4 and ∠5
∠7 and ∠5
∠3 and ∠6

Answer 1

Supplementary angles :

These are angles that add up to 180°

They could be angles in a triangle in case we have three angles.

Since in this question the options given are a pair we should consider angles on a straight line.

Angles on a straight line add up to 180°

From the given pairs pick pairs that are on a straight line.

I think you are missing the diagrams but from my explanation you can easily pick the supplementary angles.

Answer 2

The correct answers were:

4 and 3

4 and 5

3 and 6