Vertical Angles- angles who share the same vertex
1. Why do you think the person that created the vertical angles in your picture did so?
The person who created the vertical angles in this fence did so to make sure the chain links in the fence would stay held together.
2. What is the relationship between vertical angles, between two angles that are supplementary to the same angle, and between two angles that are complementary to the same angle?
The angles all share the same vertex which makes them vertical angles.