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3 definitions found
 for Right angle
From The Collaborative International Dictionary of English v.0.48 :

  Right \Right\ (r[imac]t), a. [OE. right, riht, AS. riht; akin to
     D. regt, OS. & OHG. reht, G. recht, Dan. ret, Sw. r[aum]tt,
     Icel. rettr, Goth. ra['i]hts, L. rectus, p. p. of regere to
     guide, rule; cf. Skr. [.r]ju straight, right. [root]115. Cf.
     Adroit,{Alert">Adroit,{Alert, Correct, Dress, Regular, Rector,
     Recto, Rectum, Regent, Region, Realm, Rich,
     Royal, Rule.]
     1. Straight; direct; not crooked; as, a right line. "Right as
        any line." --Chaucer
        [1913 Webster]
  
     2. Upright; erect from a base; having an upright axis; not
        oblique; as, right ascension; a right pyramid or cone.
        [1913 Webster]
  
     3. Conformed to the constitution of man and the will of God,
        or to justice and equity; not deviating from the true and
        just; according with truth and duty; just; true.
        [1913 Webster]
  
              That which is conformable to the Supreme Rule is
              absolutely right, and is called right simply without
              relation to a special end.            --Whately.
        [1913 Webster]
  
     2. Fit; suitable; proper; correct; becoming; as, the right
        man in the right place; the right way from London to
        Oxford.
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     5. Characterized by reality or genuineness; real; actual; not
        spurious. "His right wife." --Chaucer.
        [1913 Webster]
  
              In this battle, . . . the Britons never more plainly
              manifested themselves to be right barbarians.
                                                    --Milton.
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     6. According with truth; passing a true judgment; conforming
        to fact or intent; not mistaken or wrong; not erroneous;
        correct; as, this is the right faith.
        [1913 Webster]
  
              You are right, Justice, and you weigh this well.
                                                    --Shak.
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              If there be no prospect beyond the grave, the
              inference is . . . right, "Let us eat and drink, for
              to-morrow we die."                    --Locke.
        [1913 Webster]
  
     7. Most favorable or convenient; fortunate.
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              The lady has been disappointed on the right side.
                                                    --Spectator.
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     8. Of or pertaining to that side of the body in man on which
        the muscular action is usually stronger than on the other
        side; -- opposed to left when used in reference to a part
        of the body; as, the right side, hand, arm. Also applied
        to the corresponding side of the lower animals.
        [1913 Webster]
  
              Became the sovereign's favorite, his right hand.
                                                    --Longfellow.
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     Note: In designating the banks of a river, right and left are
           used always with reference to the position of one who
           is facing in the direction of the current's flow.
           [1913 Webster]
  
     9. Well placed, disposed, or adjusted; orderly; well
        regulated; correctly done.
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     10. Designed to be placed or worn outward; as, the right side
         of a piece of cloth.
         [1913 Webster]
  
     At right angles, so as to form a right angle or right
        angles, as when one line crosses another perpendicularly.
        
  
     Right and left, in both or all directions. [Colloq.]
  
     Right and left coupling (Pipe fitting), a coupling the
        opposite ends of which are tapped for a right-handed screw
        and a left-handed screw, respectivelly.
  
     Right angle.
         (a) The angle formed by one line meeting another
             perpendicularly, as the angles ABD, DBC.
         (b) (Spherics) A spherical angle included between the
             axes of two great circles whose planes are
             perpendicular to each other.
  
     Right ascension. See under Ascension.
  
     Right Center (Politics), those members belonging to the
        Center in a legislative assembly who have sympathies with
        the Right on political questions. See Center, n., 5.
  
     Right cone, Right cylinder, Right prism, Right
     pyramid (Geom.), a cone, cylinder, prism, or pyramid, the
        axis of which is perpendicular to the base.
  
     Right line. See under Line.
  
     Right sailing (Naut.), sailing on one of the four cardinal
        points, so as to alter a ship's latitude or its longitude,
        but not both. --Ham. Nav. Encyc.
  
     Right sphere (Astron. & Geol.), a sphere in such a position
        that the equator cuts the horizon at right angles; in
        spherical projections, that position of the sphere in
        which the primitive plane coincides with the plane of the
        equator.
        [1913 Webster]
  
     Note: Right is used elliptically for it is right, what you
           say is right, true.
           [1913 Webster]
  
                 "Right," cries his lordship.       --Pope.
           [1913 Webster]
  
     Syn: Straight; direct; perpendicular; upright; lawful;
          rightful; true; correct; just; equitable; proper;
          suitable; becoming.
          [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  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.
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     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.
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     4. (Astrol.) A name given to four of the twelve astrological
        "houses." [Obs.] --Chaucer.
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     5. [AS. angel.] A fishhook; tackle for catching fish,
        consisting of a line, hook, and bait, with or without a
        rod.
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              Give me mine angle: we 'll to the river there.
                                                    --Shak.
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              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]

From WordNet (r) 3.0 (2006) :

  right angle
      n 1: the 90 degree angle between two perpendicular lines [ant:
           oblique angle]

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