
1) An extremely steep face 2) Elementary geometry 3) English architectural style 4) Erect 5) Extremely steep 6) French word used in English 7) Normal 8) Orthogonal 9) Plumb 10) Rectangular 11) Right 12) Straight down 13) Straight up 14) Upright 15) Vertical
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https://www.crosswordclues.com/clue/perpendicular

1) Atrightang 2) Erect 3) Plumb 4) Steep 5) Unsloped 6) Upended 7) Upright 8) Vertical
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https://www.crosswordclues.com/clue/perpendicular

- a straight line at right angles to another line
- a Gothic style in 14th and 15th century England; characterized by vertical lines, a four-centered (Tudor) arch, fan vaulting
- 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
- an extremely steep face
...
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In elementary geometry, the word perpendicular describes the relationship between two lines which meet at a right angle. A line is said to be perpendicular to a plane if it is perpendicular to every line in the plane that it intersects. Note that this definition depends on the definition of perpendicularity between lines. Two planes in space are s...
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http://en.wikipedia.org/wiki/Perpendicular

• (n.) A line at right angles to the plane of the horizon; a vertical line or direction. • (a.) At right angles to a given line or surface; as, the line ad is perpendicular to the line bc. • (a.) Exactly upright or vertical; pointing to the zenith; at right angles to the plane of the horizon; extending in a right line from any point ...
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http://thinkexist.com/dictionary/meaning/perpendicular/

English architectural style (1330-1540).
Found on
http://www.castlesontheweb.com/glossary.html

At right angles. Two lines, planes, etc., are said to be perpendicular if they are 90° apart.
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http://www.daviddarling.info/encyclopedia/P/perpendicular.html

English architectural style (1330-1540).
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http://www.encyclo.co.uk/local/20018

Period of English Gothic architecture lasting from the end of the 14th century to the mid-16th century. It is characterized by window tracery consisting chiefly of vertical members, two or four...
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http://www.encyclo.co.uk/local/20688

The style of Gothic architecture used in England during the 14th and 15th centuries, characterized by tracery having vertical lines, a four-centred arch, and fan vaulting.
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http://www.encyclo.co.uk/local/20766

An architectural style dating from the mid 14th to the late 16th century, characterised by mullions reaching to the top of windows, and by the development of fan vaulting. Represents the last part of the Gothic period.
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http://www.encyclo.co.uk/local/20941

1. Exactly upright or vertical; pointing to the zenith; at right angles to the plane of the horizon; extending in a right line from any point toward the center of the earth. ... 2. <geometry> at right angles to a given line or surface; as, the line ad is perpendicular to the line bc. Perpendicular style, a name given to the latest variety of ...
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http://www.encyclo.co.uk/local/20973

English architectural style, c. 1330-1540
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http://www.encyclo.co.uk/local/22129
Per`pen·dic'u·lar adjective [ Latin
perpendicularis ,
perpendicularius : confer French
perpendiculaire . See
Perpendicle ,
Pension .]
1. Exactly upright or vertical; pointing to the zenith; at right angles to the plane of the horizon; extending in a right l...
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http://www.encyclo.co.uk/webster/P/60

style of Gothic architecture in vogue from the mid-14th to the 16th century.
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http://www.msgb.co.uk/glossary.html

At right angles to the horizon or
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https://sciencetrek.org/sciencetrek/topics/earth/glossary.cfm

Two or more lines which meet at right angles.
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https://studymaths.co.uk/glossary.php

English architectural style, c. 1330-1540
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https://www.encyclo.co.uk/local/20402

A style of English Gothic architecture current between c. 1350-1530.
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https://www.encyclo.co.uk/local/20434

Style of English Gothic architecture which flourished in England c. 1350-1550.
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https://www.encyclo.co.uk/local/20434

At right angles to. A line at right angles to another line or to a plane. See also: Orthogonal.
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https://www.encyclo.co.uk/local/20687
adjective extremely steep; `the great perpendicular face of the cliff`
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https://www.encyclo.co.uk/local/20974

Period of English Gothic architecture lasting from the end of the 14th century to the mid-16th century. It is characterized by window tracery consisting chiefly of vertical members, two or four arc arches, lavishly decorated vaults, and the use of traceried panels. Examples include the choir, transepts, and cloister of Gloucester Cathedral (abo...
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https://www.encyclo.co.uk/local/21221

At a right angle; also, a line at right angles to another line or to a plane. Everyday examples include lamp posts, which are perpendicular to the road, and walls, which are perpendicular to the ground. For a pair of skew lines (lines in three dimensions that do not meet), there is just one commo...
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https://www.encyclo.co.uk/local/21221

Two lines or line segments intersecting to form a right angle.
Found on
https://www.thoughtco.com/glossary-of-mathematics-definitions-4070804
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