Vertical angles are formed by intersecting lines. [math]\angle[/math]AEC and [math]\angle[/math]DEB are vertical angles. [math]\angle[/math]AED and [math]\angle[/math]CEB are also vertical angles.

Use points A, B, C, and D to change the angle values. [br][br]1. How are vertical angles different than linear pair angles?[br][br]2. Make a conjecture about the angle measures of a pair of vertical angles.[br][br]3. Are there any other types of angles in the diagram above? If so, what types of angles are there?