Question

identify all pairs of consecutive interior angles.
∠1 and ∠5
∠2 and ∠6
∠2 and ∠7
∠3 and ∠5
∠3 and ∠6
∠3 and ∠7
∠4 and ∠5
∠1 and ∠6
∠1 and ∠8

Explanation:

Step1: Recall definition

Consecutive - interior angles are on the same side of the transversal and between the two parallel lines.

Step2: Analyze pairs

For the given figure with two parallel lines and a transversal:

• $\angle3$ and $\angle5$ are consecutive - interior angles as they are on the same side of the transversal and between the parallel lines.
• $\angle4$ and $\angle6$ are consecutive - interior angles as they are on the same side of the transversal and between the parallel lines.

Answer:

$\angle3$ and $\angle5$, $\angle4$ and $\angle6$