Answer:
<19 and <16 are vertical angles
<6 and <14 are alternate interior angles
<9 and <10 are corresponding angles
Step-by-step explanation:
Vertical angles are angles that are opposite of each other ( for example, angles 19 and 16 are vertical angles)
Alternate interior angles are angles that are inside the parallel lines that are on opposite sides of a line ( for example, angles 6 and 14 are alternate interior angles)
Corresponding angles are angles that are next to each other ( for example, angles 9 and 10 are congruent angles)
