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