Question

open - ended question using the diagram, copy down the notes. what can you conclude about vertical angles? hint - what do you notice about their angle measures?

Explanation:

Step1: Recall vertical - angle definition

Vertical angles are formed when two lines intersect. They are opposite each other.

Step2: Analyze angle - measure property

By the vertical - angle theorem, vertical angles are congruent, meaning they have equal measures.

Answer:

Vertical angles are congruent, that is, they have equal angle measures.