perpendicularˌpɜr pənˈdɪk yə lər

**perpendicular** (n)

- plural
- perpendiculars

**perpendicular**

### English Definitions:

#### perpendicular (noun)

a straight line at right angles to another line

#### perpendicular, perpendicular style, English-Gothic, English-Gothic architecture (noun)

a Gothic style in 14th and 15th century England; characterized by vertical lines and a four-centered (Tudor) arch and fan vaulting

#### plumb line, perpendicular (noun)

a cord from which a metal weight is suspended pointing directly to the earth's center of gravity; used to determine the vertical from a given point

#### perpendicular (adj)

an extremely steep face

#### perpendicular (adj)

intersecting at or forming right angles

"the axes are perpendicular to each other"

#### vertical, perpendicular (adj)

at right angles to the plane of the horizon or a base line

"a vertical camera angle"; "the monument consists of two vertical pillars supporting a horizontal slab"; "measure the perpendicular height"

#### perpendicular (adj)

extremely steep

"the great perpendicular face of the cliff"

#### perpendicular (Noun)

A line or plane that is perpendicular to another.

#### perpendicular (Noun)

A device such as a plumb line that is used in making or marking a perpendicular line.

#### perpendicular (Adjective)

At or forming a right angle (to).

#### Perpendicular (Adjective)

Of a style of English Gothic architecture from the fourteenth and fifteenth centuries.

#### Perpendicular

In elementary geometry, the word perpendicular describes the relationship between two geometric objects that meet at a right angle. A line is said to be perpendicular to another line if the two lines intersect at a right angle. Explicitly, a first line is perpendicular to a second line if 1 the two lines meet and 2 at the point of intersection the straight angle on one side of the first line is cut by the second line into two congruent angles. Perpendicularity can be shown to be symmetric, meaning if a first line is perpendicular to a second line, then the second line is also perpendicular to the first. For this reason, we may speak of two lines as being perpendicular without specifying an order. Perpendicularity easily extends to segments and rays. For example, we say a line segment is perpendicular to a line segment if, when each is extended in both directions to form an infinite line, these two resulting lines are perpendicular in the sense above. In symbols, we write to mean line segment AB is perpendicular to line segment CD. A line is said to be perpendicular to a plane if 1 the line intersects the plane, 2 the line is not completely contained in the plane, and 3 the line is perpendicular to some line in the plane. Note that this definition depends on the definition of perpendicularity between lines.

#### Perpendicular

In elementary geometry, two geometric objects are perpendicular if they intersect at a right angle (90 degrees or π/2 radians). The condition of perpendicularity may be represented graphically using the perpendicular symbol, ⟂. It can be defined between two lines (or two line segments), between a line and a plane, and between two planes. Perpendicularity is one particular instance of the more general mathematical concept of orthogonality; perpendicularity is the orthogonality of classical geometric objects. Thus, in advanced mathematics, the word "perpendicular" is sometimes used to describe much more complicated geometric orthogonality conditions, such as that between a surface and its normal vector.

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"perpendicular." *Kamus.net.* STANDS4 LLC, 2024. Web. 17 Jul 2024. <https://www.kamus.net/english/perpendicular>.

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