Analyzing Lines Rays Segments And Angles

This is what kind of angle?

Vertical angles are always

Given the following two parallel lines that have been cut by a transversal. Choose all the options that represent corresponding angles.

If the following parallel lines are cut by a transversal, would 
$$\angle2$$  and  $$\angle6$$   be corresponding?

Given the following two parallel lines that have been cut by a transversal. True or False, $$\angle6$$  and $$\angle4$$  are vertical angles?

Given the following two parallel lines that have been cut by a transversal. \angle1 and which angle make up Alternate Interior angles?

Which of the following segments represents an altitude?

The dotted line represents a ?...

The figure is an example of a(n) ...

The figure is an example of a(n) ...