Geometry

In Euclidean geometry, the statement "2 planes intersect at a point" is False.

In Euclidean geometry, two planes can have three possible relationships:

Parallel: The two planes do not intersect and have no points in common. For example, think of the ceiling and the floor of a room as two planes that are parallel to each other.

Coincident: The two planes lie exactly on top of each other and have an infinite...