Many letters of the English alphabet have perpendicular lines. Perpendicular lines are like two lines making one corner of a square. So any letter that has two lines joined like the corner of a square has perpendicular lines.
These letters have right angles: E, F, f, H, I, L T, t, and sometimes X, x.
Keep in mind that the angles of the lines making the letters is effected by the font and whether or not the letter is italicized. For example, E is made of three perpendicular lines, but this 'E' has no perpendicular lines.
The letter - H
The segments of a square are perpendicular. Take the letter " T " for example. Where the bottom line connects the the top line forms a 90 degree angle, which makes them two lines perpendicular.
If the line has a slope of 2, then the perpendicular line has a slope of -1/2. The slope of a perpendicular line is the negative reciprocal. Another example would be if the slope of a line is -1/4, then the slope of the perpendicular is 4.
The perpendicular bisector of a line segment AB is the straight line perpendicular to AB through the midpoint of AB.
'altitude' or perpendicular. If on line is the base (horizontal) line, then the line that is a 90 degrees to it is the perpendicular/altitude.
The letter - H
a
L
25 o because sOme of them are perpendicular
Q
X.
A "queue," pronounced "Q," is a line of people.
A 'v' does not make a perpendicular line. Perpendicular lines meet each other at a ninety degree angle, whereas the angle made by the two lines in a 'v' is closer to forty-five degrees. A letter that has two perpendicular lines is the letter 'T'.
The segments of a square are perpendicular. Take the letter " T " for example. Where the bottom line connects the the top line forms a 90 degree angle, which makes them two lines perpendicular.
Perpendicular line.
Parallel: E, F, H, I, M, N, O (in some fonts), U, Z. Perpendicular: E, F, G, H, L, T. Many more letters have perpendicular lines in serif fonts. Also, there are letters, such as D, in which the ends of the curved section are parallel to one another and are perpendicular to the vertical element.
V