Category:Distance between Parallel Planes

This category contains results about Distance between Parallel Planes.
Definitions specific to this category can be found in Definitions/Distance between Parallel Planes.

Let $P_1$ and $P_2$ be parallel planes.

The distance between $P_1$ and $P_2$ is defined as the length of a line segment joining $P_1$ and $P_2$ that is perpendicular to both.