# Partial plane

From Groupprops

This term is related to: incidence geometry

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Template:Incidence structure property

## Defintion

An incidence structure is termed a **partial plane** if it satisfies the following equivalent conditions:

- The number of blocks incident to two distinct points is at most 1
- The number of points incident to two distinct blocks is at most 1
- The bipartite graph associated with the incidence structure, does not contain a