*Vertical Angles*
- Author:
- Alma Perez, GeoGebra Materials Team
- Topic:
- Angles
Vertical angles are formed by intersecting lines. <AED and <CEB (blue) are vertical angles. <AEC and <DEB (red) are vertical angles.
Use points A, B, C, and D to change the angle values.
1. What conjecture can you make about the angle measures of a pair of vertical angles?