Two lines are perpendicular if they form a right angle where they meet. The cross bar in H is perpendicular to the vertical side bars.
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The letter's "H", "I", "E", and "F".
They are: E T F H and L
Perpendicular lines meet at right angles and in the alphabet in capital letters they are E T F H and L
6 uppercase letters: E F G H L T1 lowercase letter: t
The letters in the alphabet that contain parallel lines are "H," "I," "K," "N," "X," and "Z." These letters have two or more straight lines that run alongside each other without intersecting. The letter "T" also contains perpendicular lines, as it has one vertical line intersected by a horizontal line at a right angle.