perpendicular
lines, segments, or rays that intersect at 90 degree angles
Perpendicular refers to the relationship between two lines, where they meet at a right angle or 90 degrees. Two lines are said to be perpendicular if they intersect each other at a 90-degree angle. Alternatively, if one line is orthogonal (perpendicular) to another, it means that the two lines form a right angle at the point of intersection.
In mathematics, the symbol ⊥ is used to denote perpendicularity between two lines. When we say that a line is perpendicular to another line, we mean that the slope of one line is equal to the negative reciprocal of the slope of the other line.
Perpendicularity is an important concept in geometry, trigonometry, and other branches of mathematics, as well as in physics and engineering. In everyday life, we come across many examples of perpendicularity, such as the corners of a rectangular box, the intersecting blades of a pair of scissors, the perpendicular walls of a room, etc.
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