##### Wiktionary

**apeirogon**

n. (context mathematics geometry English) A polygon having an infinite number of sides and vertex.

##### Wikipedia

**Apeirogon**

In geometry, an **apeirogon** is a generalized polygon with a countably infinite number of sides. It can be considered as the limit of an *n*-sided polygon as *n* approaches infinity. The interior of a linear apeirogon can be defined by a direction order of vertices, and defining half the plane as the interior.

This article describes an **apeirogon** in its linear form as a tessellation or partition of a line.