Question

vertical angles
corresponding angles
alternate exterior angles
alternate interior angles

Explanation:

Step1: Recall the definitions

• Vertical Angles: Angles opposite each other when two lines cross.
• Corresponding Angles: Angles in matching positions relative to the parallel lines and the transversal.
• Alternate Exterior Angles: Angles outside the parallel lines and on opposite sides of the transversal.
• Alternate Interior Angles: Angles inside the parallel lines and on opposite sides of the transversal.

Step2: Analyze the position of angles 1 and 2

Angles 1 and 2 are inside the two parallel lines and on opposite sides of the transversal.

Answer:

Alternate Interior Angles