For the lower case, there are 3 line segments. In the upper case, there are two.
Parellel lines
They can not be line segments on the same line, but they can both be line segments.
congruent line segments- line segments that have the same lengths.
there are infinitely many segments in a line.
It can be parellel like this ---------------------------------------------- ----------------------------------------------
They are lines of latitude.
parellel lines
5 line segments
5 line segments
Intersecting line segments
Perpendicular line segments are line segments that cross with each other and form angles of 90 degrees.