PERPENDICULAR Meaning and
Definition
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Perpendicular is an adjective used to describe a geometrical relationship between two lines, planes, or objects that intersect or come together at a right angle of 90 degrees. It characterizes the state of being situated, placed, or oriented at a right angle to each other.
In the realm of geometry, a perpendicular line is one that forms a right angle with another line. This angle measures exactly 90 degrees, making the two lines cross each other in such a way that they create four right angles at the point of intersection. Perpendicularity can also be observed in the relationship between planes or surfaces, where one plane or surface is at a right angle to another. This alignment creates distinct right angles at the points where the two planes or surfaces meet, ensuring they stand or intersect perfectly straight.
The term 'perpendicular' is also used more broadly in everyday language to describe things that are at right angles or at 90-degree angles to each other, even if they aren't directly connected to geometry. For instance, a person standing with their arms raised at their sides forms a 'T' shape, with their arms perpendicular to their body. Similarly, the vertical lines of a window or the corners of a square are examples of perpendicular elements.
In summary, perpendicular refers to the state of being at a right angle, or 90 degrees, relative to another line, plane, or object. It denotes the characteristic of intersecting, meeting, or aligning in a straight, vertical manner.
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• Hanging or extending in a right line from any point; at right angles to any plane or line; vertical.
• A line standing at right angles on another line.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
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Etymology of PERPENDICULAR
The word "perpendicular" comes from the Latin word "perpendicularis", which is derived from two Latin words: "perpendiculum", meaning a plumb line or a perpendicular line, and "pendere", meaning to hang or to weigh. The concept of a plumb line, which is a vertical line used to determine a true perpendicular, led to the development of the word "perpendicular" in its modern usage. The term first appeared in the English language in the 14th century.
Similar spelling words for PERPENDICULAR
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