# Exploring Intersections of Planes

- Author:
- GeoGebra Team

- Topic:
- Geometry, Intersection, Planes

## Complete the following in the app below.

| Plot 3 points anywhere so that none of them lie on the plane shown. |

| Construct a plane that passes through these 3 points. |

| Construct the intersection of the two planes you see here. |

| Move any 1 (or more) of the points around. |

Suppose 2 planes intersect. How would you describe their intersection?

Suppose plane *A* and plane *B* intersect at *k*. What can we conclude about *k*?