# Perpendicular Intersection

- Author:
- Sean Foster

- Topic:
- Geometry, Intersection

## Directions

Here we have a perpendicular intersection between Lines AB and DE. Move points A and B around. Pay attention to this.
1. How many right angles are there?
2. What happens as you move the points around to the right angles?
3. What conclusion can you make about all perpendicular intersections?