A part of a line.
It has a fixed starting point
It has no end point.
Extends forever in 1 direction.
--→ |
PQ |
First letter represents the fixed point.
Second letter = infinite direction point
Has a fixed starting point.
Has 1 end point.
Ray notation starts with the endpoint letter
Extends forever in one direction
It has unmeasureable length
Infinite side is denoted with an arrow
The name ray comes from a beam of light emanating from a a source, like the sun.