Question

what kind of angles are angles 1 and 2? adjacent angles vertical angles complementary angles linear pair

Explanation:

Step1: Recall angle definitions

Adjacent angles share a common side and vertex. Vertical angles are opposite, linear pair is supplementary adjacent, complementary sum to 90°.

Step2: Analyze angles 1 and 2

Angles 1 and 2 share a common vertex and side, so they are adjacent.

Answer:

Adjacent Angles (the red - labeled option: Adjacent Angles)