Question

Identifying Supplementary Angles
Examine the following diagram:

3 lines intersect a line to form 8 angles. Angles 2 and 3, 4 and 5, 1 and 4, 5 and 8, and 6 and 7 are supplementary angles.

Which angle pairs in the diagram are supplementary angles? Check all that apply.
∠3 and ∠6
∠1 and ∠4
∠5 and ∠6
∠4 and ∠5
∠6 and ∠7

Answer 1

Correct choices: ∠1 and ∠4, ∠4 and ∠5, and ∠6 and ∠7.

These are given as supplementary in the diagram (and are linear pairs that add to 180°).