Question

(a) ángulos alternos externos: ∠ y ∠ (b) ángulos correspondientes: ∠ y ∠ (c) ángulos alternos internos: ∠ y ∠

Explanation:

Step1: Identify Alternate Exterior Angles

Alternate exterior angles are on opposite sides of the transversal and outside the two lines. $\angle1$ and $\angle8$ fit this definition.

Step2: Identify Corresponding Angles

Corresponding angles are in the same relative position. $\angle2$ and $\angle6$ are corresponding.

Step3: Identify Alternate Interior Angles

Alternate interior angles are on opposite sides of the transversal and inside the two lines. $\angle4$ and $\angle6$ are alternate interior.

Answer:

(a) $\angle1$ y $\angle8$
(b) $\angle2$ y $\angle6$
(c) $\angle4$ y $\angle6$