The answer to this probably depends on (a) the font and (b) wheter the uppercase letter or the lowercase letters are considered.
In this particular font, in uppercase
B D E F H I K L M N P R and T all have perpendicular segments,
G has a short perpendicular segment
J has a perpendicular segment which ends in a curve
U has two perpendicular segments joined by a curve
and in lowercase
b d h i k l m n p r and u all have perpendicular segments
a f g j and t all have perpendicular segments with curved parts.
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.
Me either LOL i am still searching to find the answer
They are perpendicular line segments
Each of the eight line segments is perpendicular to 2 line segments. So there are 8 pair in all.
The letters X L T
The letter - H
25 o because sOme of them are perpendicular
t
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.
Me either LOL i am still searching to find the answer
no an addition sign is a perpendicular line segments
whatto line segments intersect but are not perpendicular
Perpendicular line segments are line segments that intersect and make 90 degree angles.
Perpendicular line segments are line segments that cross with each other and form angles of 90 degrees.
T L
The letters T and L are formed as asked.l and t from fiona1234
None in the Roman alphabet.