What is a Line

What is a Line Definition:

A straight one dimensional figure
which extends forever in two
directions passing through
two points.

A line is a foundations of geometry.

How To Denote a Line:

We denote lines with capital letters
Use the two points on the line
, P and Q, it passes through as PQ

Properties of a Line:

A straight line has no start nor end point
A line has infinite length.