Exploring Intersections of Planes

Complete the following in the app below.

Toolbar Image Plot 3 points anywhere. Click on a point to toggle moving up-down & left-right.
Toolbar ImageConstruct a plane that passes through these 3 points.
Toolbar ImageConstruct the intersection of the two planes you see here.
Toolbar ImageMove any 1 (or more) of the points around. Click on a point to toggle moving up-down & left-right.

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?

Check all that apply