I
Letters that have parallel line segments are H, E, F, M, and N
C. I. H. F.
t
The letter - H
A regular hexagon has three sets (pairs) of parallel line segments that form it.
They can not be line segments on the same line, but they can both be line segments.
Oh honey, you're in for a treat! The letters "O" and "S" have no parallel, perpendicular, or intersecting line segments. They're just doing their own thing, floating around without a care in the world. Just like me at a buffet table!
In the upper case Roman alphabet they are: C, I, J, O and S. However, in the case of C, O and S, there are parts of the curved segments which are parallel.
There is no specific name - other than what you used: "a pair of parallel line segments".
how many pairs of parallel line segments does a stop sigh have
Which pair. Of line is parallel fghj