Right angle

Right angle
Angle An"gle ([a^][ng]"g'l), n. [F. angle, L. angulus angle, corner; akin to uncus hook, Gr. 'agky`los bent, crooked, angular, 'a`gkos a bend or hollow, AS. angel hook, fish-hook, G. angel, and F. anchor.] 1. The inclosed space near the point where two lines meet; a corner; a nook. [1913 Webster]

Into the utmost angle of the world. --Spenser. [1913 Webster]

To search the tenderest angles of the heart. --Milton. [1913 Webster]

2. (Geom.) (a) The figure made by. two lines which meet. (b) The difference of direction of two lines. In the lines meet, the point of meeting is the vertex of the angle. [1913 Webster]

3. A projecting or sharp corner; an angular fragment. [1913 Webster]

Though but an angle reached him of the stone. --Dryden. [1913 Webster]

4. (Astrol.) A name given to four of the twelve astrological ``houses.'' [Obs.] --Chaucer. [1913 Webster]

5. [AS. angel.] A fishhook; tackle for catching fish, consisting of a line, hook, and bait, with or without a rod. [1913 Webster]

Give me mine angle: we 'll to the river there. --Shak. [1913 Webster]

A fisher next his trembling angle bears. --Pope. [1913 Webster]

{Acute angle}, one less than a right angle, or less than 90[deg].

{Adjacent} or {Contiguous angles}, such as have one leg common to both angles.

{Alternate angles}. See {Alternate}.

{Angle bar}. (a) (Carp.) An upright bar at the angle where two faces of a polygonal or bay window meet. --Knight. (b) (Mach.) Same as {Angle iron}.

{Angle bead} (Arch.), a bead worked on or fixed to the angle of any architectural work, esp. for protecting an angle of a wall.

{Angle brace}, {Angle tie} (Carp.), a brace across an interior angle of a wooden frame, forming the hypothenuse and securing the two side pieces together. --Knight.

{Angle iron} (Mach.), a rolled bar or plate of iron having one or more angles, used for forming the corners, or connecting or sustaining the sides of an iron structure to which it is riveted.

{Angle leaf} (Arch.), a detail in the form of a leaf, more or less conventionalized, used to decorate and sometimes to strengthen an angle.

{Angle meter}, an instrument for measuring angles, esp. for ascertaining the dip of strata.

{Angle shaft} (Arch.), an enriched angle bead, often having a capital or base, or both.

{Curvilineal angle}, one formed by two curved lines.

{External angles}, angles formed by the sides of any right-lined figure, when the sides are produced or lengthened.

{Facial angle}. See under {Facial}.

{Internal angles}, those which are within any right-lined figure.

{Mixtilineal angle}, one formed by a right line with a curved line.

{Oblique angle}, one acute or obtuse, in opposition to a right angle.

{Obtuse angle}, one greater than a right angle, or more than 90[deg].

{Optic angle}. See under {Optic}.

{Rectilineal} or {Right-lined angle}, one formed by two right lines.

{Right angle}, one formed by a right line falling on another perpendicularly, or an angle of 90[deg] (measured by a quarter circle).

{Solid angle}, the figure formed by the meeting of three or more plane angles at one point.

{Spherical angle}, one made by the meeting of two arcs of great circles, which mutually cut one another on the surface of a globe or sphere.

{Visual angle}, the angle formed by two rays of light, or two straight lines drawn from the extreme points of an object to the center of the eye.

{For Angles of commutation}, {draught}, {incidence}, {reflection}, {refraction}, {position}, {repose}, {fraction}, see {Commutation}, {Draught}, {Incidence}, {Reflection}, {Refraction}, etc. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Right angle — Right Right (r[imac]t), a. [OE. right, riht, AS. riht; akin to D. regt, OS. & OHG. reht, G. recht, Dan. ret, Sw. r[ a]tt, Icel. r[ e]ttr, Goth. ra[ i]hts, L. rectus, p. p. of regere to guide, rule; cf. Skr. [.r]ju straight, right. [root]115. Cf.… …   The Collaborative International Dictionary of English

  • right angle — right angles also right angle 1) N COUNT A right angle is an angle of ninety degrees. A square has four right angles. 2) PHRASE: oft PHR to n If two things are at right angles, they are situated so that they form an angle of 90° where they touch… …   English dictionary

  • right angle — right ,angle noun count an angle of 90° at right angles to/at a right angle to if one thing is at right angles to another thing, they form an angle of 90 degrees at the point where they meet ╾ right ,angled adjective …   Usage of the words and phrases in modern English

  • right angle — right .angle n 1.) an angle of 90°, like the angles at the corners of a square 2.) at right angles (to sth) if two things are at right angles, they make a 90° angle where they touch ▪ Hold the brush at right angles to the surface. >right… …   Dictionary of contemporary English

  • right angle — ► NOUN ▪ an angle of 90°, as in a corner of a square. ● at right angles to Cf. ↑at right angles to DERIVATIVES right angled adjective …   English terms dictionary

  • right angle — n. an angle of 90 degrees; angle made by the meeting of two straight lines perpendicular to each other: see ANGLE1 …   English World dictionary

  • Right angle — In geometry and trigonometry, a right angle is an angle of 90 degrees, corresponding to a quarter turn (that is, a quarter of a full circle). It can be defined as the angle such that twice that angle amounts to a half turn, or 180° [Lindahl, G.… …   Wikipedia

  • right angle — UK / US noun [countable] Word forms right angle : singular right angle plural right angles maths an angle of 90° • at right angles to/at a right angle to if one thing is at right angles to another thing, they form an angle of 90 degrees at the… …   English dictionary

  • right-angle — (ˈ) ̷ ̷| ̷ ̷ ̷ ̷ verb Etymology: right angle transitive verb : to bend, direct, or locate at a right angle white benches were right angled to every doorstep Anna Cunningham …   Useful english dictionary

  • right angle — noun Date: 15th century the angle bounded by two lines perpendicular to each other ; an angle of 90° or 1/2 π radians • right angled or right angle adjective …   New Collegiate Dictionary

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